68839518 has 16 divisors (see below), whose sum is σ = 150195456. Its totient is φ = 20860440.

The previous prime is 68839501. The next prime is 68839523. The reversal of 68839518 is 81593886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521446 + ... + 521577.

It is an arithmetic number, because the mean of its divisors is an integer number (9387216).

Almost surely, 2^68839518 is an apocalyptic number.

68839518 is an abundant number, since it is smaller than the sum of its proper divisors (81355938).

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

68839518 is a wasteful number, since it uses less digits than its factorization.

68839518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043039.

The product of its digits is 414720, while the sum is 48.

The square root of 68839518 is about 8296.9583583383. The cubic root of 68839518 is about 409.8383618246.

The spelling of 68839518 in words is "sixty-eight million, eight hundred thirty-nine thousand, five hundred eighteen".