68968456 has 32 divisors (see below), whose sum is σ = 138305880. Its totient is φ = 32128000.

The previous prime is 68968451. The next prime is 68968457. The reversal of 68968456 is 65486986.

It can be written as a sum of positive squares in 4 ways, for example, as 63520900 + 5447556 = 7970^2 + 2334^2 .

It is not an unprimeable number, because it can be changed into a prime (68968451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11226 + ... + 16246.

Almost surely, 2^68968456 is an apocalyptic number.

It is an amenable number.

68968456 is an abundant number, since it is smaller than the sum of its proper divisors (69337424).

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

68968456 is a wasteful number, since it uses less digits than its factorization.

68968456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145 (or 5141 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The square root of 68968456 is about 8304.7249201885. The cubic root of 68968456 is about 410.0940811266.

The spelling of 68968456 in words is "sixty-eight million, nine hundred sixty-eight thousand, four hundred fifty-six".