815398068 has 12 divisors (see below), whose sum is σ = 1902595520. Its totient is φ = 271799352.

The previous prime is 815398063. The next prime is 815398069. The reversal of 815398068 is 860893518.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815398063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33974908 + ... + 33974931.

Almost surely, 2^815398068 is an apocalyptic number.

It is an amenable number.

815398068 is an abundant number, since it is smaller than the sum of its proper divisors (1087197452).

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

815398068 is a wasteful number, since it uses less digits than its factorization.

815398068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67949846 (or 67949844 counting only the distinct ones).

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

The square root of 815398068 is about 28555.1758530743. The cubic root of 815398068 is about 934.2359159326.

The spelling of 815398068 in words is "eight hundred fifteen million, three hundred ninety-eight thousand, sixty-eight".