68937872 has 20 divisors (see below), whose sum is σ = 138173820. Its totient is φ = 33280128.

The previous prime is 68937811. The next prime is 68937881. The reversal of 68937872 is 27873986.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11723776 + 57214096 = 3424^2 + 7564^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68937872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73823 + ... + 74750.

It is an arithmetic number, because the mean of its divisors is an integer number (6908691).

Almost surely, 2^68937872 is an apocalyptic number.

It is an amenable number.

68937872 is an abundant number, since it is smaller than the sum of its proper divisors (69235948).

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

68937872 is a wasteful number, since it uses less digits than its factorization.

68937872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148610 (or 148604 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 68937872 is about 8302.8833545944. The cubic root of 68937872 is about 410.0334535463.

The spelling of 68937872 in words is "sixty-eight million, nine hundred thirty-seven thousand, eight hundred seventy-two".