662991776 has 48 divisors (see below), whose sum is σ = 1403256960. Its totient is φ = 307353600.

The previous prime is 662991727. The next prime is 662991781. The reversal of 662991776 is 677199266.

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 7 ways as a sum of consecutive naturals, for example, 16976 + ... + 40176.

It is an arithmetic number, because the mean of its divisors is an integer number (29234520).

Almost surely, 2^662991776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662991776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701628480).

662991776 is an abundant number, since it is smaller than the sum of its proper divisors (740265184).

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

662991776 is a wasteful number, since it uses less digits than its factorization.

662991776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23277 (or 23269 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 53.

The square root of 662991776 is about 25748.6266818252. The cubic root of 662991776 is about 871.9723499355.

The spelling of 662991776 in words is "six hundred sixty-two million, nine hundred ninety-one thousand, seven hundred seventy-six".