665662315 has 8 divisors (see below), whose sum is σ = 798946848. Its totient is φ = 532428480.

The previous prime is 665662303. The next prime is 665662331. The reversal of 665662315 is 513266566.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 665662315 - 2⁷ = 665662187 is a prime.

It is a super-2 number, since 2×665662315² = 886212635222318450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28210 + ... + 46120.

It is an arithmetic number, because the mean of its divisors is an integer number (99868356).

Almost surely, 2^665662315 is an apocalyptic number.

665662315 is a deficient number, since it is larger than the sum of its proper divisors (133284533).

665662315 is a wasteful number, since it uses less digits than its factorization.

665662315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25349.

The product of its digits is 194400, while the sum is 40.

The square root of 665662315 is about 25800.4324576159. The cubic root of 665662315 is about 873.1415532539.

The spelling of 665662315 in words is "six hundred sixty-five million, six hundred sixty-two thousand, three hundred fifteen".