669338915 has 8 divisors (see below), whose sum is σ = 917950560. Its totient is φ = 458975232.

The previous prime is 669338881. The next prime is 669338927. The reversal of 669338915 is 519833966.

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

It is a cyclic number.

It is not a de Polignac number, because 669338915 - 2¹⁰ = 669337891 is a prime.

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, 9561950 + ... + 9562019.

It is an arithmetic number, because the mean of its divisors is an integer number (114743820).

Almost surely, 2^669338915 is an apocalyptic number.

669338915 is a deficient number, since it is larger than the sum of its proper divisors (248611645).

669338915 is a wasteful number, since it uses less digits than its factorization.

669338915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19123981.

The product of its digits is 1049760, while the sum is 50.

The square root of 669338915 is about 25871.5850886644. The cubic root of 669338915 is about 874.7461206303.

It can be divided in two parts, 66933 and 8915, that multiplied together give a palindrome (596707695).

The spelling of 669338915 in words is "six hundred sixty-nine million, three hundred thirty-eight thousand, nine hundred fifteen".