68842686 has 32 divisors (see below), whose sum is σ = 153404928. Its totient is φ = 20416640.

The previous prime is 68842679. The next prime is 68842687. The reversal of 68842686 is 68624886.

It is a happy number.

It is a super-4 number, since 4×68842686⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68842687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7995 + ... + 14198.

It is an arithmetic number, because the mean of its divisors is an integer number (4793904).

Almost surely, 2^68842686 is an apocalyptic number.

68842686 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

68842686 is an abundant number, since it is smaller than the sum of its proper divisors (84562242).

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

68842686 is a wasteful number, since it uses less digits than its factorization.

68842686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22256.

The product of its digits is 884736, while the sum is 48.

The square root of 68842686 is about 8297.1492694780. The cubic root of 68842686 is about 409.8446486593.

The spelling of 68842686 in words is "sixty-eight million, eight hundred forty-two thousand, six hundred eighty-six".