68793940 has 12 divisors (see below), whose sum is σ = 144467316. Its totient is φ = 27517568.

The previous prime is 68793899. The next prime is 68793973. The reversal of 68793940 is 4939786.

It can be written as a sum of positive squares in 2 ways, for example, as 32649796 + 36144144 = 5714^2 + 6012^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719829 + ... + 1719868.

It is an arithmetic number, because the mean of its divisors is an integer number (12038943).

Almost surely, 2^68793940 is an apocalyptic number.

It is an amenable number.

68793940 is an abundant number, since it is smaller than the sum of its proper divisors (75673376).

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

68793940 is a wasteful number, since it uses less digits than its factorization.

68793940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439706 (or 3439704 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 68793940 is about 8294.2112343489. The cubic root of 68793940 is about 409.7478918085.

The spelling of 68793940 in words is "sixty-eight million, seven hundred ninety-three thousand, nine hundred forty".