578794987 has 2 divisors, whose sum is σ = 578794988. Its totient is φ = 578794986.

The previous prime is 578794973. The next prime is 578795011. The reversal of 578794987 is 789497875.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 578794987 - 2²³ = 570406379 is a prime.

It is not a weakly prime, because it can be changed into another prime (578794387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289397493 + 289397494.

It is an arithmetic number, because the mean of its divisors is an integer number (289397494).

Almost surely, 2^578794987 is an apocalyptic number.

578794987 is a deficient number, since it is larger than the sum of its proper divisors (1).

578794987 is an equidigital number, since it uses as much as digits as its factorization.

578794987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 64.

The square root of 578794987 is about 24058.1584291067. The cubic root of 578794987 is about 833.3771470119.

The spelling of 578794987 in words is "five hundred seventy-eight million, seven hundred ninety-four thousand, nine hundred eighty-seven".