161606692 has 24 divisors (see below), whose sum is σ = 322483896. Its totient is φ = 70199808.

The previous prime is 161606681. The next prime is 161606719. The reversal of 161606692 is 296606161.

It can be written as a sum of positive squares in 4 ways, for example, as 64899136 + 96707556 = 8056^2 + 9834^2 .

It is a super-2 number, since 2×161606692² = 52233445798365728, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90523 + ... + 92290.

It is an arithmetic number, because the mean of its divisors is an integer number (13436829).

Almost surely, 2^161606692 is an apocalyptic number.

It is an amenable number.

161606692 is a deficient number, since it is larger than the sum of its proper divisors (160877204).

161606692 is a wasteful number, since it uses less digits than its factorization.

161606692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182847 (or 182845 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 161606692 is about 12712.4620746730. The cubic root of 161606692 is about 544.6946548699.

The spelling of 161606692 in words is "one hundred sixty-one million, six hundred six thousand, six hundred ninety-two".