165464880 has 80 divisors (see below), whose sum is σ = 586224384. Its totient is φ = 37820160.

The previous prime is 165464869. The next prime is 165464933. The reversal of 165464880 is 88464561.

165464880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47566 + ... + 50925.

Almost surely, 2^165464880 is an apocalyptic number.

165464880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165464880 is an abundant number, since it is smaller than the sum of its proper divisors (420759504).

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

165464880 is a wasteful number, since it uses less digits than its factorization.

165464880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98514 (or 98508 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 165464880 is about 12863.3152802845. The cubic root of 165464880 is about 548.9952786745.

The spelling of 165464880 in words is "one hundred sixty-five million, four hundred sixty-four thousand, eight hundred eighty".