665150013 has 12 divisors (see below), whose sum is σ = 1048115328. Its totient is φ = 403121160.

The previous prime is 665149951. The next prime is 665150023. The reversal of 665150013 is 310051566.

It is a happy number.

665150013 is a `hidden beast` number, since 6 + 651 + 5 + 0 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 665150013 - 2¹³ = 665141821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665150023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3359245 + ... + 3359442.

It is an arithmetic number, because the mean of its divisors is an integer number (87342944).

Almost surely, 2^665150013 is an apocalyptic number.

It is an amenable number.

665150013 is a deficient number, since it is larger than the sum of its proper divisors (382965315).

665150013 is a wasteful number, since it uses less digits than its factorization.

665150013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6718704 (or 6718701 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 665150013 is about 25790.5023797521. The cubic root of 665150013 is about 872.9175022321.

The spelling of 665150013 in words is "six hundred sixty-five million, one hundred fifty thousand, thirteen".