68636976 has 80 divisors (see below), whose sum is σ = 184750080. Its totient is φ = 21934080.

The previous prime is 68636963. The next prime is 68636977. The reversal of 68636976 is 67963686.

It is a super-2 number, since 2×68636976² = 9422068948849152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68636977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287065 + ... + 287303.

It is an arithmetic number, because the mean of its divisors is an integer number (2309376).

Almost surely, 2^68636976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68636976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92375040).

68636976 is an abundant number, since it is smaller than the sum of its proper divisors (116113104).

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

68636976 is a wasteful number, since it uses less digits than its factorization.

68636976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 468 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 51.

The square root of 68636976 is about 8284.7435687534. The cubic root of 68636976 is about 409.4360201254.

The spelling of 68636976 in words is "sixty-eight million, six hundred thirty-six thousand, nine hundred seventy-six".