811456963 has 4 divisors (see below), whose sum is σ = 812663368. Its totient is φ = 810250560.

The previous prime is 811456957. The next prime is 811456973. The reversal of 811456963 is 369654118.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-811456963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811456973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602193 + ... + 603538.

It is an arithmetic number, because the mean of its divisors is an integer number (203165842).

Almost surely, 2^811456963 is an apocalyptic number.

811456963 is a deficient number, since it is larger than the sum of its proper divisors (1206405).

811456963 is a wasteful number, since it uses less digits than its factorization.

811456963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206404.

The product of its digits is 155520, while the sum is 43.

The square root of 811456963 is about 28486.0836725584. The cubic root of 811456963 is about 932.7283210653.

The spelling of 811456963 in words is "eight hundred eleven million, four hundred fifty-six thousand, nine hundred sixty-three".