68923980 has 48 divisors (see below), whose sum is σ = 214431840. Its totient is φ = 18379584.

The previous prime is 68923979. The next prime is 68923997. The reversal of 68923980 is 8932986.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 63279 + ... + 64358.

It is an arithmetic number, because the mean of its divisors is an integer number (4467330).

Almost surely, 2^68923980 is an apocalyptic number.

68923980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68923980 is an abundant number, since it is smaller than the sum of its proper divisors (145507860).

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

68923980 is a wasteful number, since it uses less digits than its factorization.

68923980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127655 (or 127647 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 68923980 is about 8302.0467355948. The cubic root of 68923980 is about 410.0059090959.

The spelling of 68923980 in words is "sixty-eight million, nine hundred twenty-three thousand, nine hundred eighty".