68929686 has 24 divisors (see below), whose sum is σ = 170683344. Its totient is φ = 19694160.

The previous prime is 68929681. The next prime is 68929697. The reversal of 68929686 is 68692986.

It is a super-2 number, since 2×68929686² = 9502603224117192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68929681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273405 + ... + 273656.

It is an arithmetic number, because the mean of its divisors is an integer number (7111806).

Almost surely, 2^68929686 is an apocalyptic number.

68929686 is an abundant number, since it is smaller than the sum of its proper divisors (101753658).

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

68929686 is a wasteful number, since it uses less digits than its factorization.

68929686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547076 (or 547073 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 68929686 is about 8302.3903786801. The cubic root of 68929686 is about 410.0172231512.

The spelling of 68929686 in words is "sixty-eight million, nine hundred twenty-nine thousand, six hundred eighty-six".