161601064 has 8 divisors (see below), whose sum is σ = 303002010. Its totient is φ = 80800528.

The previous prime is 161601043. The next prime is 161601071. The reversal of 161601064 is 460106161.

It can be written as a sum of positive squares in only one way, i.e., 123876900 + 37724164 = 11130^2 + 6142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×161601064² = 52229807771864192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100059 + ... + 10100074.

Almost surely, 2^161601064 is an apocalyptic number.

It is an amenable number.

161601064 is a deficient number, since it is larger than the sum of its proper divisors (141400946).

161601064 is a wasteful number, since it uses less digits than its factorization.

161601064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200139 (or 20200135 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 161601064 is about 12712.2407151532. The cubic root of 161601064 is about 544.6883317466.

The spelling of 161601064 in words is "one hundred sixty-one million, six hundred one thousand, sixty-four".