68694918 has 32 divisors (see below), whose sum is σ = 147709440. Its totient is φ = 21229920.

The previous prime is 68694911. The next prime is 68694919. The reversal of 68694918 is 81949686.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68694911) 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, 1053 + ... + 11768.

It is an arithmetic number, because the mean of its divisors is an integer number (4615920).

Almost surely, 2^68694918 is an apocalyptic number.

68694918 is an abundant number, since it is smaller than the sum of its proper divisors (79014522).

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

68694918 is a wasteful number, since it uses less digits than its factorization.

68694918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12892.

The product of its digits is 746496, while the sum is 51.

The square root of 68694918 is about 8288.2397407411. The cubic root of 68694918 is about 409.5512003617.

The spelling of 68694918 in words is "sixty-eight million, six hundred ninety-four thousand, nine hundred eighteen".