978695424 has 162 divisors, whose sum is σ = 3282904170. Its totient is φ = 279595008.

The previous prime is 978695411. The next prime is 978695447. The reversal of 978695424 is 424596879.

978695424 is a `hidden beast` number, since 97 + 8 + 6 + 9 + 542 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 815673600 + 163021824 = 28560^2 + 12768^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 108562 + ... + 117230.

Almost surely, 2^978695424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978695424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641452085).

978695424 is an abundant number, since it is smaller than the sum of its proper divisors (2304208746).

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

978695424 is a wasteful number, since it uses less digits than its factorization.

978695424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8705 (or 8681 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 978695424 is about 31284.1081701237. The cubic root of 978695424 is about 992.8474374892.

The spelling of 978695424 in words is "nine hundred seventy-eight million, six hundred ninety-five thousand, four hundred twenty-four".