669670884 has 81 divisors (see below), whose sum is σ = 1794466947. Its totient is φ = 210543408.

The previous prime is 669670879. The next prime is 669670889. The reversal of 669670884 is 488076966.

669670884 = 1³ + 2³ + ... + 227³.

The square root of 669670884 is 25878.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (669670879) and next prime (669670889).

It is a self number, because there is not a number n which added to its sum of digits gives 669670884.

It is not an unprimeable number, because it can be changed into a prime (669670889) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2949979 + ... + 2950205.

Almost surely, 2^669670884 is an apocalyptic number.

669670884 is the 25878-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669670884

669670884 is an abundant number, since it is smaller than the sum of its proper divisors (1124796063).

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

669670884 is a wasteful number, since it uses less digits than its factorization.

669670884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The cubic root of 669670884 is about 874.8907113571.

The spelling of 669670884 in words is "six hundred sixty-nine million, six hundred seventy thousand, eight hundred eighty-four".