68665258 has 12 divisors (see below), whose sum is σ = 107672418. Its totient is φ = 32839400.

The previous prime is 68665237. The next prime is 68665271. The reversal of 68665258 is 85256686.

It can be written as a sum of positive squares in only one way, i.e., 47293129 + 21372129 = 6877^2 + 4623^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31393 + ... + 33508.

Almost surely, 2^68665258 is an apocalyptic number.

68665258 is a deficient number, since it is larger than the sum of its proper divisors (39007160).

68665258 is a wasteful number, since it uses less digits than its factorization.

68665258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64949 (or 64926 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 68665258 is about 8286.4502653428. The cubic root of 68665258 is about 409.4922487069.

The spelling of 68665258 in words is "sixty-eight million, six hundred sixty-five thousand, two hundred fifty-eight".