665413366 has 16 divisors (see below), whose sum is σ = 1012703040. Its totient is φ = 327862080.

The previous prime is 665413319. The next prime is 665413367. The reversal of 665413366 is 663314566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665413367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84226 + ... + 91786.

It is an arithmetic number, because the mean of its divisors is an integer number (63293940).

Almost surely, 2^665413366 is an apocalyptic number.

665413366 is a deficient number, since it is larger than the sum of its proper divisors (347289674).

665413366 is a wasteful number, since it uses less digits than its factorization.

665413366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8199.

The product of its digits is 233280, while the sum is 40.

The square root of 665413366 is about 25795.6074943003. The cubic root of 665413366 is about 873.0326918413.

The spelling of 665413366 in words is "six hundred sixty-five million, four hundred thirteen thousand, three hundred sixty-six".