68979402 has 24 divisors (see below), whose sum is σ = 154277760. Its totient is φ = 22251240.

The previous prime is 68979397. The next prime is 68979413. The reversal of 68979402 is 20497986.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 61252 + ... + 62367.

It is an arithmetic number, because the mean of its divisors is an integer number (6428240).

Almost surely, 2^68979402 is an apocalyptic number.

68979402 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

68979402 is an abundant number, since it is smaller than the sum of its proper divisors (85298358).

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

68979402 is a wasteful number, since it uses less digits than its factorization.

68979402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123658 (or 123655 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 68979402 is about 8305.3839164725. The cubic root of 68979402 is about 410.1157753552.

The spelling of 68979402 in words is "sixty-eight million, nine hundred seventy-nine thousand, four hundred two".