68649624 has 48 divisors (see below), whose sum is σ = 191929920. Its totient is φ = 22144320.

The previous prime is 68649619. The next prime is 68649649. The reversal of 68649624 is 42694686.

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

It is a self number, because there is not a number n which added to its sum of digits gives 68649624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13147 + ... + 17610.

It is an arithmetic number, because the mean of its divisors is an integer number (3998540).

Almost surely, 2^68649624 is an apocalyptic number.

It is an amenable number.

68649624 is an abundant number, since it is smaller than the sum of its proper divisors (123280296).

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

68649624 is a wasteful number, since it uses less digits than its factorization.

68649624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30800 (or 30793 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 68649624 is about 8285.5068643988. The cubic root of 68649624 is about 409.4611680317.

The spelling of 68649624 in words is "sixty-eight million, six hundred forty-nine thousand, six hundred twenty-four".