978607583 has 2 divisors, whose sum is σ = 978607584. Its totient is φ = 978607582.

The previous prime is 978607549. The next prime is 978607603. The reversal of 978607583 is 385706879.

It is a strong prime.

It is an emirp because it is prime and its reverse (385706879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978607583 - 2⁸ = 978607327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978607283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489303791 + 489303792.

It is an arithmetic number, because the mean of its divisors is an integer number (489303792).

Almost surely, 2^978607583 is an apocalyptic number.

978607583 is a deficient number, since it is larger than the sum of its proper divisors (1).

978607583 is an equidigital number, since it uses as much as digits as its factorization.

978607583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 978607583 is about 31282.7042149492. The cubic root of 978607583 is about 992.8177328712.

The spelling of 978607583 in words is "nine hundred seventy-eight million, six hundred seven thousand, five hundred eighty-three".