669014520 has 32 divisors (see below), whose sum is σ = 2007043920. Its totient is φ = 178403840.

The previous prime is 669014473. The next prime is 669014557. The reversal of 669014520 is 25410966.

It is a congruent number.

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, 2787441 + ... + 2787680.

Almost surely, 2^669014520 is an apocalyptic number.

669014520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669014520 is an abundant number, since it is smaller than the sum of its proper divisors (1338029400).

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

669014520 is a wasteful number, since it uses less digits than its factorization.

669014520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575135 (or 5575131 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 669014520 is about 25865.3149990484. The cubic root of 669014520 is about 874.6047826047.

The spelling of 669014520 in words is "six hundred sixty-nine million, fourteen thousand, five hundred twenty".