665386315 has 16 divisors (see below), whose sum is σ = 871572960. Its totient is φ = 483627520.

The previous prime is 665386303. The next prime is 665386321. The reversal of 665386315 is 513683566.

It is not a de Polignac number, because 665386315 - 2¹³ = 665378123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141177 + ... + 145813.

It is an arithmetic number, because the mean of its divisors is an integer number (54473310).

Almost surely, 2^665386315 is an apocalyptic number.

665386315 is a deficient number, since it is larger than the sum of its proper divisors (206186645).

665386315 is a wasteful number, since it uses less digits than its factorization.

665386315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262.

The product of its digits is 388800, while the sum is 43.

The square root of 665386315 is about 25795.0831555163. The cubic root of 665386315 is about 873.0208612366.

The spelling of 665386315 in words is "six hundred sixty-five million, three hundred eighty-six thousand, three hundred fifteen".