812570107 has 2 divisors, whose sum is σ = 812570108. Its totient is φ = 812570106.

The previous prime is 812570051. The next prime is 812570137. The reversal of 812570107 is 701075218.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 812570107 - 2²⁷ = 678352379 is a prime.

It is not a weakly prime, because it can be changed into another prime (812570137) 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, 406285053 + 406285054.

It is an arithmetic number, because the mean of its divisors is an integer number (406285054).

Almost surely, 2^812570107 is an apocalyptic number.

812570107 is a deficient number, since it is larger than the sum of its proper divisors (1).

812570107 is an equidigital number, since it uses as much as digits as its factorization.

812570107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 812570107 is about 28505.6153590832. The cubic root of 812570107 is about 933.1546269103.

The spelling of 812570107 in words is "eight hundred twelve million, five hundred seventy thousand, one hundred seven".