68768784 has 80 divisors (see below), whose sum is σ = 225600640. Its totient is φ = 19647360.

The previous prime is 68768759. The next prime is 68768803. The reversal of 68768784 is 48786786.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 68768784.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8347 + ... + 14394.

It is an arithmetic number, because the mean of its divisors is an integer number (2820008).

Almost surely, 2^68768784 is an apocalyptic number.

It is an amenable number.

68768784 is an abundant number, since it is smaller than the sum of its proper divisors (156831856).

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

68768784 is a wasteful number, since it uses less digits than its factorization.

68768784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22765 (or 22753 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 68768784 is about 8292.6946163476. The cubic root of 68768784 is about 409.6979413108.

The spelling of 68768784 in words is "sixty-eight million, seven hundred sixty-eight thousand, seven hundred eighty-four".