812632069 has 2 divisors, whose sum is σ = 812632070. Its totient is φ = 812632068.

The previous prime is 812632061. The next prime is 812632081. The reversal of 812632069 is 960236218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 787531969 + 25100100 = 28063^2 + 5010^2 .

It is a cyclic number.

It is not a de Polignac number, because 812632069 - 2³ = 812632061 is a prime.

It is a super-2 number, since 2×812632069² = 1320741759134441522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812632061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406316034 + 406316035.

It is an arithmetic number, because the mean of its divisors is an integer number (406316035).

Almost surely, 2^812632069 is an apocalyptic number.

It is an amenable number.

812632069 is a deficient number, since it is larger than the sum of its proper divisors (1).

812632069 is an equidigital number, since it uses as much as digits as its factorization.

812632069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 812632069 is about 28506.7021768566. The cubic root of 812632069 is about 933.1783453386.

The spelling of 812632069 in words is "eight hundred twelve million, six hundred thirty-two thousand, sixty-nine".