978763868 has 24 divisors (see below), whose sum is σ = 1769349120. Its totient is φ = 473258160.

The previous prime is 978763847. The next prime is 978763871. The reversal of 978763868 is 868367879.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 978763868.

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, 335705 + ... + 338607.

It is an arithmetic number, because the mean of its divisors is an integer number (73722880).

Almost surely, 2^978763868 is an apocalyptic number.

It is an amenable number.

978763868 is a deficient number, since it is larger than the sum of its proper divisors (790585252).

978763868 is a wasteful number, since it uses less digits than its factorization.

978763868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657 (or 5655 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 62.

The square root of 978763868 is about 31285.2020610384. The cubic root of 978763868 is about 992.8705815183.

The spelling of 978763868 in words is "nine hundred seventy-eight million, seven hundred sixty-three thousand, eight hundred sixty-eight".