978504966 has 24 divisors (see below), whose sum is σ = 2121206880. Its totient is φ = 325997136.

The previous prime is 978504949. The next prime is 978504977. The reversal of 978504966 is 669405879.

978504966 is a `hidden beast` number, since 9 + 78 + 504 + 9 + 66 = 666.

It is a super-2 number, since 2×978504966² = 1914943936973322312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23715 + ... + 50193.

It is an arithmetic number, because the mean of its divisors is an integer number (88383620).

Almost surely, 2^978504966 is an apocalyptic number.

978504966 is an abundant number, since it is smaller than the sum of its proper divisors (1142701914).

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

978504966 is a wasteful number, since it uses less digits than its factorization.

978504966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28540 (or 28537 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 978504966 is about 31281.0640164301. The cubic root of 978504966 is about 992.7830292984.

The spelling of 978504966 in words is "nine hundred seventy-eight million, five hundred four thousand, nine hundred sixty-six".