978887523 has 8 divisors (see below), whose sum is σ = 1381958928. Its totient is φ = 614203904.

The previous prime is 978887519. The next prime is 978887531. The reversal of 978887523 is 325788879.

It is a happy number.

978887523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 978887523 - 2² = 978887519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978887323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9596886 + ... + 9596987.

It is an arithmetic number, because the mean of its divisors is an integer number (172744866).

Almost surely, 2^978887523 is an apocalyptic number.

978887523 is a deficient number, since it is larger than the sum of its proper divisors (403071405).

978887523 is a wasteful number, since it uses less digits than its factorization.

978887523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19193893.

The product of its digits is 6773760, while the sum is 57.

The square root of 978887523 is about 31287.1782524407. The cubic root of 978887523 is about 992.9123921619.

The spelling of 978887523 in words is "nine hundred seventy-eight million, eight hundred eighty-seven thousand, five hundred twenty-three".