165796641 has 24 divisors (see below), whose sum is σ = 253797440. Its totient is φ = 104004000.

The previous prime is 165796639. The next prime is 165796663. The reversal of 165796641 is 146697561.

165796641 is a `hidden beast` number, since 16 + 579 + 6 + 64 + 1 = 666.

165796641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165796641 - 2¹ = 165796639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165796601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22611 + ... + 29031.

Almost surely, 2^165796641 is an apocalyptic number.

It is an amenable number.

165796641 is a deficient number, since it is larger than the sum of its proper divisors (88000799).

165796641 is a wasteful number, since it uses less digits than its factorization.

165796641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6597 (or 6594 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 165796641 is about 12876.2044485167. The cubic root of 165796641 is about 549.3619498972.

It can be divided in two parts, 16579 and 6641, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 165796641 in words is "one hundred sixty-five million, seven hundred ninety-six thousand, six hundred forty-one".