812500697 has 2 divisors, whose sum is σ = 812500698. Its totient is φ = 812500696.

The previous prime is 812500687. The next prime is 812500709. The reversal of 812500697 is 796005218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420619081 + 391881616 = 20509^2 + 19796^2 .

It is a cyclic number.

It is not a de Polignac number, because 812500697 - 2⁴ = 812500681 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 812500697.

It is not a weakly prime, because it can be changed into another prime (812500687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406250348 + 406250349.

It is an arithmetic number, because the mean of its divisors is an integer number (406250349).

Almost surely, 2^812500697 is an apocalyptic number.

It is an amenable number.

812500697 is a deficient number, since it is larger than the sum of its proper divisors (1).

812500697 is an equidigital number, since it uses as much as digits as its factorization.

812500697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 812500697 is about 28504.3978536646. The cubic root of 812500697 is about 933.1280560309.

The spelling of 812500697 in words is "eight hundred twelve million, five hundred thousand, six hundred ninety-seven".