165633740 has 12 divisors (see below), whose sum is σ = 347830896. Its totient is φ = 66253488.

The previous prime is 165633667. The next prime is 165633751. The reversal of 165633740 is 47336561.

It is a self number, because there is not a number n which added to its sum of digits gives 165633740.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4140824 + ... + 4140863.

It is an arithmetic number, because the mean of its divisors is an integer number (28985908).

Almost surely, 2^165633740 is an apocalyptic number.

165633740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165633740 is an abundant number, since it is smaller than the sum of its proper divisors (182197156).

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

165633740 is a wasteful number, since it uses less digits than its factorization.

165633740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281696 (or 8281694 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 165633740 is about 12869.8772332917. The cubic root of 165633740 is about 549.1819684934.

The spelling of 165633740 in words is "one hundred sixty-five million, six hundred thirty-three thousand, seven hundred forty".