665170582287 has 32 divisors (see below), whose sum is σ = 963374480640. Its totient is φ = 406607362560.

The previous prime is 665170582259. The next prime is 665170582291. The reversal of 665170582287 is 782285071566.

It is not a de Polignac number, because 665170582287 - 2¹⁰ = 665170581263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665170582207) 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, 463212 + ... + 1242942.

It is an arithmetic number, because the mean of its divisors is an integer number (30105452520).

Almost surely, 2^665170582287 is an apocalyptic number.

665170582287 is a deficient number, since it is larger than the sum of its proper divisors (298203898353).

665170582287 is a wasteful number, since it uses less digits than its factorization.

665170582287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780183.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 665170582287 in words is "six hundred sixty-five billion, one hundred seventy million, five hundred eighty-two thousand, two hundred eighty-seven".