165264940 has 24 divisors (see below), whose sum is σ = 356437872. Its totient is φ = 64319040.

The previous prime is 165264893. The next prime is 165264941. The reversal of 165264940 is 49462561.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 165264940.

It is not an unprimeable number, because it can be changed into a prime (165264941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110926 + ... + 112405.

It is an arithmetic number, because the mean of its divisors is an integer number (14851578).

Almost surely, 2^165264940 is an apocalyptic number.

165264940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165264940 is an abundant number, since it is smaller than the sum of its proper divisors (191172932).

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

165264940 is a wasteful number, since it uses less digits than its factorization.

165264940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223377 (or 223375 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 165264940 is about 12855.5412177006. The cubic root of 165264940 is about 548.7740628334.

The spelling of 165264940 in words is "one hundred sixty-five million, two hundred sixty-four thousand, nine hundred forty".