68643080 has 32 divisors (see below), whose sum is σ = 168488640. Its totient is φ = 24960960.

The previous prime is 68643053. The next prime is 68643089. The reversal of 68643080 is 8034686.

It is a self number, because there is not a number n which added to its sum of digits gives 68643080.

It is not an unprimeable number, because it can be changed into a prime (68643089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77564 + ... + 78443.

It is an arithmetic number, because the mean of its divisors is an integer number (5265270).

Almost surely, 2^68643080 is an apocalyptic number.

It is an amenable number.

68643080 is an abundant number, since it is smaller than the sum of its proper divisors (99845560).

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

68643080 is a wasteful number, since it uses less digits than its factorization.

68643080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156029 (or 156025 counting only the distinct ones).

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

The square root of 68643080 is about 8285.1119485496. Note that the first 3 decimals coincide. The cubic root of 68643080 is about 409.4481570402.

The spelling of 68643080 in words is "sixty-eight million, six hundred forty-three thousand, eighty".