68557958 has 12 divisors (see below), whose sum is σ = 119626812. Its totient is φ = 29381940.

The previous prime is 68557939. The next prime is 68557967. The reversal of 68557958 is 85975586.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 349688 + ... + 349883.

It is an arithmetic number, because the mean of its divisors is an integer number (9968901).

Almost surely, 2^68557958 is an apocalyptic number.

68557958 is a deficient number, since it is larger than the sum of its proper divisors (51068854).

68557958 is a wasteful number, since it uses less digits than its factorization.

68557958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699587 (or 699580 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 53.

The square root of 68557958 is about 8279.9733091357. The cubic root of 68557958 is about 409.2788393529.

The spelling of 68557958 in words is "sixty-eight million, five hundred fifty-seven thousand, nine hundred fifty-eight".