161074690 has 32 divisors (see below), whose sum is σ = 340314624. Its totient is φ = 53732160.

The previous prime is 161074679. The next prime is 161074703. The reversal of 161074690 is 96470161.

It is a super-2 number, since 2×161074690² = 51890111517192200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28506 + ... + 33685.

It is an arithmetic number, because the mean of its divisors is an integer number (10634832).

Almost surely, 2^161074690 is an apocalyptic number.

161074690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161074690 is an abundant number, since it is smaller than the sum of its proper divisors (179239934).

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

161074690 is a wasteful number, since it uses less digits than its factorization.

161074690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62242.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 161074690 is about 12691.5203974938. The cubic root of 161074690 is about 544.0962943184.

The spelling of 161074690 in words is "one hundred sixty-one million, seventy-four thousand, six hundred ninety".