662636670 has 128 divisors (see below), whose sum is σ = 1733114880. Its totient is φ = 161694720.

The previous prime is 662636669. The next prime is 662636683. The reversal of 662636670 is 76636266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1668912 + ... + 1669308.

It is an arithmetic number, because the mean of its divisors is an integer number (13539960).

Almost surely, 2^662636670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662636670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866557440).

662636670 is an abundant number, since it is smaller than the sum of its proper divisors (1070478210).

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

662636670 is a wasteful number, since it uses less digits than its factorization.

662636670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 326592, while the sum is 42.

The square root of 662636670 is about 25741.7301283344. The cubic root of 662636670 is about 871.8166426685.

The spelling of 662636670 in words is "six hundred sixty-two million, six hundred thirty-six thousand, six hundred seventy".