68426664 has 16 divisors (see below), whose sum is σ = 171066720. Its totient is φ = 22808880.

The previous prime is 68426629. The next prime is 68426681. The reversal of 68426664 is 46662486.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425532 + ... + 1425579.

It is an arithmetic number, because the mean of its divisors is an integer number (10691670).

Almost surely, 2^68426664 is an apocalyptic number.

It is an amenable number.

68426664 is an abundant number, since it is smaller than the sum of its proper divisors (102640056).

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

68426664 is a wasteful number, since it uses less digits than its factorization.

68426664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851120 (or 2851116 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The square root of 68426664 is about 8272.0411024124. The cubic root of 68426664 is about 409.0174051014.

The spelling of 68426664 in words is "sixty-eight million, four hundred twenty-six thousand, six hundred sixty-four".