161695064 has 16 divisors (see below), whose sum is σ = 303328800. Its totient is φ = 80807392.

The previous prime is 161695063. The next prime is 161695081. The reversal of 161695064 is 460596161.

It is a super-2 number, since 2×161695064² = 52290587443928192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161695063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18689 + ... + 25935.

It is an arithmetic number, because the mean of its divisors is an integer number (18958050).

Almost surely, 2^161695064 is an apocalyptic number.

It is an amenable number.

161695064 is a deficient number, since it is larger than the sum of its proper divisors (141633736).

161695064 is a wasteful number, since it uses less digits than its factorization.

161695064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10042 (or 10038 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 161695064 is about 12715.9374015446. The cubic root of 161695064 is about 544.7939225921.

The spelling of 161695064 in words is "one hundred sixty-one million, six hundred ninety-five thousand, sixty-four".