978688113 has 16 divisors (see below), whose sum is σ = 1487961216. Its totient is φ = 566841600.

The previous prime is 978688099. The next prime is 978688121. The reversal of 978688113 is 311886879.

978688113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 978688113 - 2¹⁶ = 978622577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (978688313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737413 + ... + 738738.

It is an arithmetic number, because the mean of its divisors is an integer number (92997576).

Almost surely, 2^978688113 is an apocalyptic number.

It is an amenable number.

978688113 is a deficient number, since it is larger than the sum of its proper divisors (509273103).

978688113 is a wasteful number, since it uses less digits than its factorization.

978688113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476184.

The product of its digits is 580608, while the sum is 51.

The square root of 978688113 is about 31283.9913214411. The cubic root of 978688113 is about 992.8449652438.

The spelling of 978688113 in words is "nine hundred seventy-eight million, six hundred eighty-eight thousand, one hundred thirteen".