165679490 has 16 divisors (see below), whose sum is σ = 298397952. Its totient is φ = 66232944.

The previous prime is 165679489. The next prime is 165679529. The reversal of 165679490 is 94976561.

It is a Curzon number.

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, 18317 + ... + 25823.

It is an arithmetic number, because the mean of its divisors is an integer number (18649872).

Almost surely, 2^165679490 is an apocalyptic number.

165679490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165679490 is a deficient number, since it is larger than the sum of its proper divisors (132718462).

165679490 is a wasteful number, since it uses less digits than its factorization.

165679490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9721.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 165679490 is about 12871.6545168055. The cubic root of 165679490 is about 549.2325273593.

The spelling of 165679490 in words is "one hundred sixty-five million, six hundred seventy-nine thousand, four hundred ninety".