165680452 has 24 divisors (see below), whose sum is σ = 338413824. Its totient is φ = 69494592.

The previous prime is 165680443. The next prime is 165680479. The reversal of 165680452 is 254086561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61633 + ... + 64264.

It is an arithmetic number, because the mean of its divisors is an integer number (14100576).

Almost surely, 2^165680452 is an apocalyptic number.

It is an amenable number.

165680452 is an abundant number, since it is smaller than the sum of its proper divisors (172733372).

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

165680452 is a wasteful number, since it uses less digits than its factorization.

165680452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125955 (or 125953 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 165680452 is about 12871.6918856846. The cubic root of 165680452 is about 549.2335903769.

The spelling of 165680452 in words is "one hundred sixty-five million, six hundred eighty thousand, four hundred fifty-two".