165716655 has 16 divisors (see below), whose sum is σ = 285542880. Its totient is φ = 81583488.

The previous prime is 165716609. The next prime is 165716671. The reversal of 165716655 is 556617561.

165716655 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 165716655 - 2⁶ = 165716591 is a prime.

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, 424720 + ... + 425109.

It is an arithmetic number, because the mean of its divisors is an integer number (17846430).

Almost surely, 2^165716655 is an apocalyptic number.

165716655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165716655 is a deficient number, since it is larger than the sum of its proper divisors (119826225).

165716655 is a wasteful number, since it uses less digits than its factorization.

165716655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849850.

The product of its digits is 189000, while the sum is 42.

The square root of 165716655 is about 12873.0981119542. The cubic root of 165716655 is about 549.2735919891.

The spelling of 165716655 in words is "one hundred sixty-five million, seven hundred sixteen thousand, six hundred fifty-five".