669325015 has 4 divisors (see below), whose sum is σ = 803190024. Its totient is φ = 535460008.

The previous prime is 669324977. The next prime is 669325021. The reversal of 669325015 is 510523966.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 669325015 - 2¹¹ = 669322967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66932497 + ... + 66932506.

It is an arithmetic number, because the mean of its divisors is an integer number (200797506).

Almost surely, 2^669325015 is an apocalyptic number.

669325015 is a deficient number, since it is larger than the sum of its proper divisors (133865009).

669325015 is a wasteful number, since it uses less digits than its factorization.

669325015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133865008.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 669325015 is about 25871.3164527822. The cubic root of 669325015 is about 874.7400653744.

The spelling of 669325015 in words is "six hundred sixty-nine million, three hundred twenty-five thousand, fifteen".