68611686 has 32 divisors (see below), whose sum is σ = 161215488. Its totient is φ = 19191840.

The previous prime is 68611663. The next prime is 68611729.

68611686 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39126 + ... + 40841.

It is an arithmetic number, because the mean of its divisors is an integer number (5037984).

Almost surely, 2^68611686 is an apocalyptic number.

68611686 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

68611686 is an abundant number, since it is smaller than the sum of its proper divisors (92603802).

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

68611686 is a wasteful number, since it uses less digits than its factorization.

68611686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79996.

The product of its digits is 82944, while the sum is 42.

The square root of 68611686 is about 8283.2171286282. The cubic root of 68611686 is about 409.3857269765.

The spelling of 68611686 in words is "sixty-eight million, six hundred eleven thousand, six hundred eighty-six".