8574639797 has 2 divisors, whose sum is σ = 8574639798. Its totient is φ = 8574639796.

The previous prime is 8574639791. The next prime is 8574639841. The reversal of 8574639797 is 7979364758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5063603281 + 3511036516 = 71159^2 + 59254^2 .

It is a cyclic number.

It is not a de Polignac number, because 8574639797 - 2¹⁸ = 8574377653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8574639791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4287319898 + 4287319899.

It is an arithmetic number, because the mean of its divisors is an integer number (4287319899).

Almost surely, 2^8574639797 is an apocalyptic number.

It is an amenable number.

8574639797 is a deficient number, since it is larger than the sum of its proper divisors (1).

8574639797 is an equidigital number, since it uses as much as digits as its factorization.

8574639797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80015040, while the sum is 65.

The square root of 8574639797 is about 92599.3509534489. The cubic root of 8574639797 is about 2046.7837567569.

The spelling of 8574639797 in words is "eight billion, five hundred seventy-four million, six hundred thirty-nine thousand, seven hundred ninety-seven".