161675712 has 336 divisors, whose sum is σ = 570585600. Its totient is φ = 43130880.

The previous prime is 161675711. The next prime is 161675713. The reversal of 161675712 is 217576161.

161675712 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161675711) and next prime (161675713).

It is a super-2 number, since 2×161675712² = 52278071701413888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161675711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2046489 + ... + 2046567.

Almost surely, 2^161675712 is an apocalyptic number.

161675712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161675712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285292800).

161675712 is an abundant number, since it is smaller than the sum of its proper divisors (408909888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161675712 is a wasteful number, since it uses less digits than its factorization.

161675712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 131 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 161675712 is about 12715.1764439193. The cubic root of 161675712 is about 544.7721877035.

The spelling of 161675712 in words is "one hundred sixty-one million, six hundred seventy-five thousand, seven hundred twelve".