68555998 has 24 divisors (see below), whose sum is σ = 120197952. Its totient is φ = 29240064.

The previous prime is 68555987. The next prime is 68556001. The reversal of 68555998 is 89955586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20286 + ... + 23422.

It is an arithmetic number, because the mean of its divisors is an integer number (5008248).

Almost surely, 2^68555998 is an apocalyptic number.

68555998 is a deficient number, since it is larger than the sum of its proper divisors (51641954).

68555998 is a wasteful number, since it uses less digits than its factorization.

68555998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376 (or 3369 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 55.

The square root of 68555998 is about 8279.8549504203. The cubic root of 68555998 is about 409.2749390317.

The spelling of 68555998 in words is "sixty-eight million, five hundred fifty-five thousand, nine hundred ninety-eight".