68825664 has 42 divisors (see below), whose sum is σ = 197277990. Its totient is φ = 22941696.

The previous prime is 68825651. The next prime is 68825737. The reversal of 68825664 is 46652886.

68825664 is a `hidden beast` number, since 6 + 8 + 82 + 566 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49112064 + 19713600 = 7008^2 + 4440^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59169 + ... + 60320.

It is an arithmetic number, because the mean of its divisors is an integer number (4697095).

Almost surely, 2^68825664 is an apocalyptic number.

68825664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68825664 is an abundant number, since it is smaller than the sum of its proper divisors (128452326).

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

68825664 is a wasteful number, since it uses less digits than its factorization.

68825664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119507 (or 119494 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 68825664 is about 8296.1234320615. The cubic root of 68825664 is about 409.8108665633.

The spelling of 68825664 in words is "sixty-eight million, eight hundred twenty-five thousand, six hundred sixty-four".