662957568 has 640 divisors, whose sum is σ = 2639831040. Its totient is φ = 159252480.

The previous prime is 662957567. The next prime is 662957573. The reversal of 662957568 is 865759266.

It is a happy number.

662957568 is a `hidden beast` number, since 6 + 6 + 2 + 9 + 575 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662957567) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 21385713 + ... + 21385743.

It is an arithmetic number, because the mean of its divisors is an integer number (4124736).

Almost surely, 2^662957568 is an apocalyptic number.

662957568 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662957568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319915520).

662957568 is an abundant number, since it is smaller than the sum of its proper divisors (1976873472).

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

662957568 is a wasteful number, since it uses less digits than its factorization.

662957568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 73 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 662957568 is about 25747.9624048195. The cubic root of 662957568 is about 871.9573527946.

The spelling of 662957568 in words is "six hundred sixty-two million, nine hundred fifty-seven thousand, five hundred sixty-eight".