68557885 has 32 divisors (see below), whose sum is σ = 94711680. Its totient is φ = 47174400.

The previous prime is 68557861. The next prime is 68557897. The reversal of 68557885 is 58875586.

It is not a de Polignac number, because 68557885 - 2⁹ = 68557373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84130 + ... + 84940.

It is an arithmetic number, because the mean of its divisors is an integer number (2959740).

Almost surely, 2^68557885 is an apocalyptic number.

It is an amenable number.

68557885 is a deficient number, since it is larger than the sum of its proper divisors (26153795).

68557885 is a wasteful number, since it uses less digits than its factorization.

68557885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909.

The product of its digits is 2688000, while the sum is 52.

The square root of 68557885 is about 8279.9689009078. The cubic root of 68557885 is about 409.2786940872.

The spelling of 68557885 in words is "sixty-eight million, five hundred fifty-seven thousand, eight hundred eighty-five".