812672507 has 2 divisors, whose sum is σ = 812672508. Its totient is φ = 812672506.

The previous prime is 812672491. The next prime is 812672527. The reversal of 812672507 is 705276218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 812672507 - 2⁴ = 812672491 is a prime.

It is not a weakly prime, because it can be changed into another prime (812672527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406336253 + 406336254.

It is an arithmetic number, because the mean of its divisors is an integer number (406336254).

Almost surely, 2^812672507 is an apocalyptic number.

812672507 is a deficient number, since it is larger than the sum of its proper divisors (1).

812672507 is an equidigital number, since it uses as much as digits as its factorization.

812672507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 812672507 is about 28507.4114398344. The cubic root of 812672507 is about 933.1938239467.

The spelling of 812672507 in words is "eight hundred twelve million, six hundred seventy-two thousand, five hundred seven".