816315607 has 2 divisors, whose sum is σ = 816315608. Its totient is φ = 816315606.

The previous prime is 816315587. The next prime is 816315623. The reversal of 816315607 is 706513618.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-816315607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816315637) 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, 408157803 + 408157804.

It is an arithmetic number, because the mean of its divisors is an integer number (408157804).

Almost surely, 2^816315607 is an apocalyptic number.

816315607 is a deficient number, since it is larger than the sum of its proper divisors (1).

816315607 is an equidigital number, since it uses as much as digits as its factorization.

816315607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 816315607 is about 28571.2374075748. The cubic root of 816315607 is about 934.5862056040.

The spelling of 816315607 in words is "eight hundred sixteen million, three hundred fifteen thousand, six hundred seven".