68778858 has 16 divisors (see below), whose sum is σ = 137639520. Its totient is φ = 22912656.

The previous prime is 68778817. The next prime is 68778877. The reversal of 68778858 is 85887786.

It is a junction number, because it is equal to n+sod(n) for n = 68778798 and 68778807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16216 + ... + 20012.

It is an arithmetic number, because the mean of its divisors is an integer number (8602470).

Almost surely, 2^68778858 is an apocalyptic number.

68778858 is an abundant number, since it is smaller than the sum of its proper divisors (68860662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68778858 is a wasteful number, since it uses less digits than its factorization.

68778858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821.

The product of its digits is 6021120, while the sum is 57.

The square root of 68778858 is about 8293.3019961895. The cubic root of 68778858 is about 409.7179460053.

The spelling of 68778858 in words is "sixty-eight million, seven hundred seventy-eight thousand, eight hundred fifty-eight".