662990628 has 12 divisors (see below), whose sum is σ = 1546978160. Its totient is φ = 220996872.

The previous prime is 662990597. The next prime is 662990681. The reversal of 662990628 is 826099266.

It is a tau number, because it is divible by the number of its divisors (12).

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, 27624598 + ... + 27624621.

Almost surely, 2^662990628 is an apocalyptic number.

It is an amenable number.

662990628 is an abundant number, since it is smaller than the sum of its proper divisors (883987532).

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

662990628 is a wasteful number, since it uses less digits than its factorization.

662990628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55249226 (or 55249224 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 662990628 is about 25748.6043893645. The cubic root of 662990628 is about 871.9718466488.

The spelling of 662990628 in words is "six hundred sixty-two million, nine hundred ninety thousand, six hundred twenty-eight".