8578993 has 2 divisors, whose sum is σ = 8578994. Its totient is φ = 8578992.

The previous prime is 8578991. The next prime is 8579003. The reversal of 8578993 is 3998758.

8578993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8567329 + 11664 = 2927^2 + 108^2 .

It is a cyclic number.

It is not a de Polignac number, because 8578993 - 2¹ = 8578991 is a prime.

Together with 8578991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8578991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4289496 + 4289497.

It is an arithmetic number, because the mean of its divisors is an integer number (4289497).

Almost surely, 2^8578993 is an apocalyptic number.

It is an amenable number.

8578993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8578993 is an equidigital number, since it uses as much as digits as its factorization.

8578993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 8578993 is about 2928.9918060657. The cubic root of 8578993 is about 204.7130070927.

The spelling of 8578993 in words is "eight million, five hundred seventy-eight thousand, nine hundred ninety-three".