68981860 has 24 divisors (see below), whose sum is σ = 147026880. Its totient is φ = 27180384.

The previous prime is 68981833. The next prime is 68981873. The reversal of 68981860 is 6818986.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 68981860.

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, 24400 + ... + 27079.

It is an arithmetic number, because the mean of its divisors is an integer number (6126120).

Almost surely, 2^68981860 is an apocalyptic number.

It is an amenable number.

68981860 is an abundant number, since it is smaller than the sum of its proper divisors (78045020).

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

68981860 is a wasteful number, since it uses less digits than its factorization.

68981860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51555 (or 51553 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 68981860 is about 8305.5318914564. The cubic root of 68981860 is about 410.1206466287.

The spelling of 68981860 in words is "sixty-eight million, nine hundred eighty-one thousand, eight hundred sixty".