68399694 has 32 divisors (see below), whose sum is σ = 165818880. Its totient is φ = 20727000.

The previous prime is 68399689. The next prime is 68399699. The reversal of 68399694 is 49699386.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68399689) and next prime (68399699).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 68399694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68399699) 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, 56982 + ... + 58169.

It is an arithmetic number, because the mean of its divisors is an integer number (5181840).

Almost surely, 2^68399694 is an apocalyptic number.

68399694 is an abundant number, since it is smaller than the sum of its proper divisors (97419186).

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

68399694 is a wasteful number, since it uses less digits than its factorization.

68399694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115173 (or 115167 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 68399694 is about 8270.4107515891. The cubic root of 68399694 is about 408.9636607061.

The spelling of 68399694 in words is "sixty-eight million, three hundred ninety-nine thousand, six hundred ninety-four".