165115677 has 4 divisors (see below), whose sum is σ = 220154240. Its totient is φ = 110077116.

The previous prime is 165115661. The next prime is 165115711. The reversal of 165115677 is 776511561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 165115677 - 2⁴ = 165115661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165115477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27519277 + ... + 27519282.

It is an arithmetic number, because the mean of its divisors is an integer number (55038560).

Almost surely, 2^165115677 is an apocalyptic number.

It is an amenable number.

165115677 is a deficient number, since it is larger than the sum of its proper divisors (55038563).

165115677 is an equidigital number, since it uses as much as digits as its factorization.

165115677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55038562.

The product of its digits is 44100, while the sum is 39.

The square root of 165115677 is about 12849.7345108761. The cubic root of 165115677 is about 548.6088002445.

The spelling of 165115677 in words is "one hundred sixty-five million, one hundred fifteen thousand, six hundred seventy-seven".