68678980 has 24 divisors (see below), whose sum is σ = 152710488. Its totient is φ = 25855488.

The previous prime is 68678971. The next prime is 68678983. The reversal of 68678980 is 8987686.

It can be written as a sum of positive squares in 4 ways, for example, as 19342404 + 49336576 = 4398^2 + 7024^2 .

It is not an unprimeable number, because it can be changed into a prime (68678983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100659 + ... + 101338.

It is an arithmetic number, because the mean of its divisors is an integer number (6362937).

Almost surely, 2^68678980 is an apocalyptic number.

It is an amenable number.

68678980 is an abundant number, since it is smaller than the sum of its proper divisors (84031508).

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

68678980 is a wasteful number, since it uses less digits than its factorization.

68678980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202023 (or 202021 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 68678980 is about 8287.2782021602. The cubic root of 68678980 is about 409.5195244042.

The spelling of 68678980 in words is "sixty-eight million, six hundred seventy-eight thousand, nine hundred eighty".