68688752 has 40 divisors (see below), whose sum is σ = 145704960. Its totient is φ = 31110080.

The previous prime is 68688709. The next prime is 68688769. The reversal of 68688752 is 25788686.

It is a self number, because there is not a number n which added to its sum of digits gives 68688752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66899 + ... + 67917.

It is an arithmetic number, because the mean of its divisors is an integer number (3642624).

Almost surely, 2^68688752 is an apocalyptic number.

It is an amenable number.

68688752 is an abundant number, since it is smaller than the sum of its proper divisors (77016208).

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

68688752 is a wasteful number, since it uses less digits than its factorization.

68688752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1415 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The square root of 68688752 is about 8287.8677595628. The cubic root of 68688752 is about 409.5389463342.

The spelling of 68688752 in words is "sixty-eight million, six hundred eighty-eight thousand, seven hundred fifty-two".