669707548 has 24 divisors (see below), whose sum is σ = 1220171792. Its totient is φ = 321335424.

The previous prime is 669707531. The next prime is 669707551. The reversal of 669707548 is 845707966.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 669707495 and 669707504.

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, 20190 + ... + 41797.

Almost surely, 2^669707548 is an apocalyptic number.

It is an amenable number.

669707548 is a deficient number, since it is larger than the sum of its proper divisors (550464244).

669707548 is a wasteful number, since it uses less digits than its factorization.

669707548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62101 (or 62099 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The square root of 669707548 is about 25878.7083912625. The cubic root of 669707548 is about 874.9066776118.

The spelling of 669707548 in words is "six hundred sixty-nine million, seven hundred seven thousand, five hundred forty-eight".