68624688 has 40 divisors (see below), whose sum is σ = 193398336. Its totient is φ = 20795200.

The previous prime is 68624681. The next prime is 68624707. The reversal of 68624688 is 88642686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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

It is not an unprimeable number, because it can be changed into a prime (68624681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64458 + ... + 65513.

Almost surely, 2^68624688 is an apocalyptic number.

It is an amenable number.

68624688 is an abundant number, since it is smaller than the sum of its proper divisors (124773648).

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

68624688 is a wasteful number, since it uses less digits than its factorization.

68624688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129993 (or 129987 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 68624688 is about 8284.0019314339. The cubic root of 68624688 is about 409.4115850450.

The spelling of 68624688 in words is "sixty-eight million, six hundred twenty-four thousand, six hundred eighty-eight".