811698955 has 4 divisors (see below), whose sum is σ = 974038752. Its totient is φ = 649359160.

The previous prime is 811698919. The next prime is 811698959. The reversal of 811698955 is 559896118.

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

It is not a de Polignac number, because 811698955 - 2⁷ = 811698827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811698959) 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, 81169891 + ... + 81169900.

It is an arithmetic number, because the mean of its divisors is an integer number (243509688).

Almost surely, 2^811698955 is an apocalyptic number.

811698955 is a deficient number, since it is larger than the sum of its proper divisors (162339797).

811698955 is a wasteful number, since it uses less digits than its factorization.

811698955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162339796.

The product of its digits is 777600, while the sum is 52.

The square root of 811698955 is about 28490.3309036592. The cubic root of 811698955 is about 932.8210309968.

The spelling of 811698955 in words is "eight hundred eleven million, six hundred ninety-eight thousand, nine hundred fifty-five".