68875570 has 32 divisors (see below), whose sum is σ = 136183680. Its totient is φ = 24963840.

The previous prime is 68875559. The next prime is 68875571. The reversal of 68875570 is 7557886.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 68875570.

It is not an unprimeable number, because it can be changed into a prime (68875571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3511 + ... + 12250.

It is an arithmetic number, because the mean of its divisors is an integer number (4255740).

Almost surely, 2^68875570 is an apocalyptic number.

68875570 is a deficient number, since it is larger than the sum of its proper divisors (67308110).

68875570 is a wasteful number, since it uses less digits than its factorization.

68875570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15810.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 68875570 is about 8299.1306773662. The cubic root of 68875570 is about 409.9098949325.

The spelling of 68875570 in words is "sixty-eight million, eight hundred seventy-five thousand, five hundred seventy".