68557863 has 16 divisors (see below), whose sum is σ = 102154752. Its totient is φ = 40536000.

The previous prime is 68557861. The next prime is 68557897. The reversal of 68557863 is 36875586.

It is not a de Polignac number, because 68557863 - 2¹ = 68557861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68557861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23983 + ... + 26688.

It is an arithmetic number, because the mean of its divisors is an integer number (6384672).

Almost surely, 2^68557863 is an apocalyptic number.

68557863 is a deficient number, since it is larger than the sum of its proper divisors (33596889).

68557863 is a wasteful number, since it uses less digits than its factorization.

68557863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50726.

The product of its digits is 1209600, while the sum is 48.

The square root of 68557863 is about 8279.9675724003. The cubic root of 68557863 is about 409.2786503084.

The spelling of 68557863 in words is "sixty-eight million, five hundred fifty-seven thousand, eight hundred sixty-three".