68624406 has 24 divisors (see below), whose sum is σ = 152314344. Its totient is φ = 22316640.

The previous prime is 68624401. The next prime is 68624407. The reversal of 68624406 is 60442686.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68624401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45756 + ... + 47231.

It is an arithmetic number, because the mean of its divisors is an integer number (6346431).

Almost surely, 2^68624406 is an apocalyptic number.

68624406 is an abundant number, since it is smaller than the sum of its proper divisors (83689938).

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

68624406 is a wasteful number, since it uses less digits than its factorization.

68624406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93036 (or 93033 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 68624406 is about 8283.9849106574. The cubic root of 68624406 is about 409.4110242447.

The spelling of 68624406 in words is "sixty-eight million, six hundred twenty-four thousand, four hundred six".