165687027 has 32 divisors (see below), whose sum is σ = 248935680. Its totient is φ = 97152000.

The previous prime is 165687023. The next prime is 165687029. The reversal of 165687027 is 720786561.

It is not a de Polignac number, because 165687027 - 2² = 165687023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165687027.

It is not an unprimeable number, because it can be changed into a prime (165687023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187627 + ... + 188507.

It is an arithmetic number, because the mean of its divisors is an integer number (7779240).

Almost surely, 2^165687027 is an apocalyptic number.

165687027 is a deficient number, since it is larger than the sum of its proper divisors (83248653).

165687027 is a wasteful number, since it uses less digits than its factorization.

165687027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 165687027 is about 12871.9472885807. The cubic root of 165687027 is about 549.2408556941.

The spelling of 165687027 in words is "one hundred sixty-five million, six hundred eighty-seven thousand, twenty-seven".