68513570 has 32 divisors (see below), whose sum is σ = 131010048. Its totient is φ = 25708288.

The previous prime is 68513569. The next prime is 68513581. The reversal of 68513570 is 7531586.

It is a self number, because there is not a number n which added to its sum of digits gives 68513570.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78959 + ... + 79821.

It is an arithmetic number, because the mean of its divisors is an integer number (4094064).

Almost surely, 2^68513570 is an apocalyptic number.

68513570 is a deficient number, since it is larger than the sum of its proper divisors (62496478).

68513570 is a wasteful number, since it uses less digits than its factorization.

68513570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 68513570 is about 8277.2924317074. The cubic root of 68513570 is about 409.1904907895.

The spelling of 68513570 in words is "sixty-eight million, five hundred thirteen thousand, five hundred seventy".