811623461 has 8 divisors (see below), whose sum is σ = 898623264. Its totient is φ = 726826320.

The previous prime is 811623457. The next prime is 811623467. The reversal of 811623461 is 164326118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 811623461 - 2² = 811623457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811623467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549890 + ... + 551363.

It is an arithmetic number, because the mean of its divisors is an integer number (112327908).

Almost surely, 2^811623461 is an apocalyptic number.

It is an amenable number.

811623461 is a deficient number, since it is larger than the sum of its proper divisors (86999803).

811623461 is a wasteful number, since it uses less digits than its factorization.

811623461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101331.

The product of its digits is 6912, while the sum is 32.

The square root of 811623461 is about 28489.0059672148. The cubic root of 811623461 is about 932.7921103508.

Adding to 811623461 its reverse (164326118), we get a palindrome (975949579).

The spelling of 811623461 in words is "eight hundred eleven million, six hundred twenty-three thousand, four hundred sixty-one".