812602993 has 2 divisors, whose sum is σ = 812602994. Its totient is φ = 812602992.

The previous prime is 812602981. The next prime is 812603063. The reversal of 812602993 is 399206218.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 704796304 + 107806689 = 26548^2 + 10383^2 .

It is a cyclic number.

It is not a de Polignac number, because 812602993 - 2¹³ = 812594801 is a prime.

It is not a weakly prime, because it can be changed into another prime (812602913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406301496 + 406301497.

It is an arithmetic number, because the mean of its divisors is an integer number (406301497).

Almost surely, 2^812602993 is an apocalyptic number.

It is an amenable number.

812602993 is a deficient number, since it is larger than the sum of its proper divisors (1).

812602993 is an equidigital number, since it uses as much as digits as its factorization.

812602993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 812602993 is about 28506.1921869618. The cubic root of 812602993 is about 933.1672154894.

The spelling of 812602993 in words is "eight hundred twelve million, six hundred two thousand, nine hundred ninety-three".