662725566 has 24 divisors (see below), whose sum is σ = 1440817560. Its totient is φ = 220152816.

The previous prime is 662725513. The next prime is 662725571. The reversal of 662725566 is 665527266.

662725566 is a `hidden beast` number, since 6 + 62 + 7 + 25 + 566 = 666.

662725566 is digitally balanced in base 2, 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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57556 + ... + 68103.

It is an arithmetic number, because the mean of its divisors is an integer number (60034065).

Almost surely, 2^662725566 is an apocalyptic number.

662725566 is an abundant number, since it is smaller than the sum of its proper divisors (778091994).

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

662725566 is a wasteful number, since it uses less digits than its factorization.

662725566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125960 (or 125957 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 662725566 is about 25743.4567608936. The cubic root of 662725566 is about 871.8556271026.

The spelling of 662725566 in words is "six hundred sixty-two million, seven hundred twenty-five thousand, five hundred sixty-six".