864523507 has 2 divisors, whose sum is σ = 864523508. Its totient is φ = 864523506.

The previous prime is 864523489. The next prime is 864523531. The reversal of 864523507 is 705325468.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864523507 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864523507.

It is not a weakly prime, because it can be changed into another prime (864523547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432261753 + 432261754.

It is an arithmetic number, because the mean of its divisors is an integer number (432261754).

Almost surely, 2^864523507 is an apocalyptic number.

864523507 is a deficient number, since it is larger than the sum of its proper divisors (1).

864523507 is an equidigital number, since it uses as much as digits as its factorization.

864523507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 864523507 is about 29402.7805998004. The cubic root of 864523507 is about 952.6329570556.

The spelling of 864523507 in words is "eight hundred sixty-four million, five hundred twenty-three thousand, five hundred seven".