669637070 has 16 divisors (see below), whose sum is σ = 1217282688. Its totient is φ = 265202400.

The previous prime is 669637069. The next prime is 669637099. The reversal of 669637070 is 70736966.

669637070 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330494 + ... + 332513.

It is an arithmetic number, because the mean of its divisors is an integer number (76080168).

Almost surely, 2^669637070 is an apocalyptic number.

669637070 is a deficient number, since it is larger than the sum of its proper divisors (547645618).

669637070 is a wasteful number, since it uses less digits than its factorization.

669637070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663115.

The product of its (nonzero) digits is 285768, while the sum is 44.

The square root of 669637070 is about 25877.3466568735. The cubic root of 669637070 is about 874.8759856895.

The spelling of 669637070 in words is "six hundred sixty-nine million, six hundred thirty-seven thousand, seventy".