332646561 has 16 divisors (see below), whose sum is σ = 530718720. Its totient is φ = 204705360.

The previous prime is 332646557. The next prime is 332646569. The reversal of 332646561 is 165646233.

332646561 is a `hidden beast` number, since 3 + 3 + 2 + 646 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 332646561 - 2² = 332646557 is a prime.

It is a super-2 number, since 2×332646561² = 221307469090253442, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (332646569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473505 + ... + 474206.

It is an arithmetic number, because the mean of its divisors is an integer number (33169920).

Almost surely, 2^332646561 is an apocalyptic number.

It is an amenable number.

332646561 is a deficient number, since it is larger than the sum of its proper divisors (198072159).

332646561 is a wasteful number, since it uses less digits than its factorization.

332646561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947733 (or 947727 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 332646561 is about 18238.6008509425. The cubic root of 332646561 is about 692.8847656074.

The spelling of 332646561 in words is "three hundred thirty-two million, six hundred forty-six thousand, five hundred sixty-one".