161576712 has 96 divisors (see below), whose sum is σ = 492860160. Its totient is φ = 47376000.

The previous prime is 161576711. The next prime is 161576717. The reversal of 161576712 is 217675161.

161576712 is a `hidden beast` number, since 16 + 1 + 576 + 71 + 2 = 666.

It is a super-2 number, since 2×161576712² = 52214067721461888, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (161576711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21262 + ... + 27842.

It is an arithmetic number, because the mean of its divisors is an integer number (5133960).

Almost surely, 2^161576712 is an apocalyptic number.

161576712 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 161576712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246430080).

161576712 is an abundant number, since it is smaller than the sum of its proper divisors (331283448).

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

161576712 is a wasteful number, since it uses less digits than its factorization.

161576712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635 (or 6628 counting only the distinct ones).

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

The square root of 161576712 is about 12711.2828620875. The cubic root of 161576712 is about 544.6609703002.

The spelling of 161576712 in words is "one hundred sixty-one million, five hundred seventy-six thousand, seven hundred twelve".