669908004 has 96 divisors (see below), whose sum is σ = 1727308800. Its totient is φ = 201237120.

The previous prime is 669908003. The next prime is 669908011. The reversal of 669908004 is 400809966.

It is not an unprimeable number, because it can be changed into a prime (669908003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468739 + ... + 470165.

It is an arithmetic number, because the mean of its divisors is an integer number (17992800).

Almost surely, 2^669908004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669908004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863654400).

669908004 is an abundant number, since it is smaller than the sum of its proper divisors (1057400796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669908004 is a wasteful number, since it uses less digits than its factorization.

669908004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553 (or 1551 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 669908004 is about 25882.5810923099. The cubic root of 669908004 is about 874.9939608835.

The spelling of 669908004 in words is "six hundred sixty-nine million, nine hundred eight thousand, four".