165995655 has 16 divisors (see below), whose sum is σ = 303535104. Its totient is φ = 75883680.

The previous prime is 165995597. The next prime is 165995677. The reversal of 165995655 is 556599561.

165995655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165995655 - 2¹² = 165991559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165995598 and 165995607.

It is a congruent number.

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, 790351 + ... + 790560.

It is an arithmetic number, because the mean of its divisors is an integer number (18970944).

Almost surely, 2^165995655 is an apocalyptic number.

165995655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165995655 is a deficient number, since it is larger than the sum of its proper divisors (137539449).

165995655 is a wasteful number, since it uses less digits than its factorization.

165995655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580926.

The product of its digits is 1822500, while the sum is 51.

The square root of 165995655 is about 12883.9301069200. The cubic root of 165995655 is about 549.5816708809.

The spelling of 165995655 in words is "one hundred sixty-five million, nine hundred ninety-five thousand, six hundred fifty-five".