161677070 has 16 divisors (see below), whose sum is σ = 292105440. Its totient is φ = 64429344.

The previous prime is 161677057. The next prime is 161677073. The reversal of 161677070 is 70776161.

It is a super-2 number, since 2×161677070² = 52278949927569800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161677070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161677073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27362 + ... + 32741.

It is an arithmetic number, because the mean of its divisors is an integer number (18256590).

Almost surely, 2^161677070 is an apocalyptic number.

161677070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161677070 is a deficient number, since it is larger than the sum of its proper divisors (130428370).

161677070 is a wasteful number, since it uses less digits than its factorization.

161677070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60379.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 161677070 is about 12715.2298445604. The cubic root of 161677070 is about 544.7737129760.

Subtracting from 161677070 its reverse (70776161), we obtain a palindrome (90900909).

The spelling of 161677070 in words is "one hundred sixty-one million, six hundred seventy-seven thousand, seventy".