165499856 has 10 divisors (see below), whose sum is σ = 320656002. Its totient is φ = 82749920.

The previous prime is 165499847. The next prime is 165499871. The reversal of 165499856 is 658994561.

It is a happy number.

165499856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 140659600 + 24840256 = 11860^2 + 4984^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165499798 and 165499807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5171855 + ... + 5171886.

Almost surely, 2^165499856 is an apocalyptic number.

165499856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165499856 is a deficient number, since it is larger than the sum of its proper divisors (155156146).

165499856 is a wasteful number, since it uses less digits than its factorization.

165499856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343749 (or 10343743 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 53.

The square root of 165499856 is about 12864.6747335485. The cubic root of 165499856 is about 549.0339581938.

The spelling of 165499856 in words is "one hundred sixty-five million, four hundred ninety-nine thousand, eight hundred fifty-six".