662121604 has 12 divisors (see below), whose sum is σ = 1176007504. Its totient is φ = 326119464.

The previous prime is 662121583. The next prime is 662121613. The reversal of 662121604 is 406121266.

662121604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235034 + ... + 1235569.

Almost surely, 2^662121604 is an apocalyptic number.

It is an amenable number.

662121604 is a deficient number, since it is larger than the sum of its proper divisors (513885900).

662121604 is a wasteful number, since it uses less digits than its factorization.

662121604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470674 (or 2470672 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 662121604 is about 25731.7236888631. The cubic root of 662121604 is about 871.5906970746.

The spelling of 662121604 in words is "six hundred sixty-two million, one hundred twenty-one thousand, six hundred four".