978725313 has 12 divisors (see below), whose sum is σ = 1414936848. Its totient is φ = 651919320.

The previous prime is 978725299. The next prime is 978725317. The reversal of 978725313 is 313527879.

It is a happy number.

It is not a de Polignac number, because 978725313 - 2²⁰ = 977676737 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (978725317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35895 + ... + 56972.

It is an arithmetic number, because the mean of its divisors is an integer number (117911404).

Almost surely, 2^978725313 is an apocalyptic number.

It is an amenable number.

978725313 is a deficient number, since it is larger than the sum of its proper divisors (436211535).

978725313 is a wasteful number, since it uses less digits than its factorization.

978725313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94044 (or 94041 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 978725313 is about 31284.5858690826. The cubic root of 978725313 is about 992.8575444521.

The spelling of 978725313 in words is "nine hundred seventy-eight million, seven hundred twenty-five thousand, three hundred thirteen".