68304680 has 16 divisors (see below), whose sum is σ = 153685620. Its totient is φ = 27321856.

The previous prime is 68304667. The next prime is 68304697. The reversal of 68304680 is 8640386.

It can be written as a sum of positive squares in 2 ways, for example, as 66945124 + 1359556 = 8182^2 + 1166^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68304680.

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 3 ways as a sum of consecutive naturals, for example, 853769 + ... + 853848.

Almost surely, 2^68304680 is an apocalyptic number.

It is an amenable number.

68304680 is an abundant number, since it is smaller than the sum of its proper divisors (85380940).

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

68304680 is a wasteful number, since it uses less digits than its factorization.

68304680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707628 (or 1707624 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 68304680 is about 8264.6645424966. The cubic root of 68304680 is about 408.7742091794.

The spelling of 68304680 in words is "sixty-eight million, three hundred four thousand, six hundred eighty".