165456715 has 4 divisors (see below), whose sum is σ = 198548064. Its totient is φ = 132365368.

The previous prime is 165456713. The next prime is 165456721. The reversal of 165456715 is 517654561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165456715 - 2¹ = 165456713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165456713) 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, 16545667 + ... + 16545676.

It is an arithmetic number, because the mean of its divisors is an integer number (49637016).

Almost surely, 2^165456715 is an apocalyptic number.

165456715 is a deficient number, since it is larger than the sum of its proper divisors (33091349).

165456715 is an equidigital number, since it uses as much as digits as its factorization.

165456715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33091348.

The product of its digits is 126000, while the sum is 40.

The square root of 165456715 is about 12862.9979009561. The cubic root of 165456715 is about 548.9862483187.

The spelling of 165456715 in words is "one hundred sixty-five million, four hundred fifty-six thousand, seven hundred fifteen".