662974806 has 64 divisors (see below), whose sum is σ = 1552920768. Its totient is φ = 186789888.

The previous prime is 662974787. The next prime is 662974811. The reversal of 662974806 is 608479266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42306 + ... + 55818.

It is an arithmetic number, because the mean of its divisors is an integer number (24264387).

Almost surely, 2^662974806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662974806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776460384).

662974806 is an abundant number, since it is smaller than the sum of its proper divisors (889945962).

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

662974806 is a wasteful number, since it uses less digits than its factorization.

662974806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13585.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 662974806 is about 25748.2971475785. The cubic root of 662974806 is about 871.9649101765.

The spelling of 662974806 in words is "six hundred sixty-two million, nine hundred seventy-four thousand, eight hundred six".