804761617631 has 4 divisors (see below), whose sum is σ = 804764679600. Its totient is φ = 804758555664.

The previous prime is 804761617613. The next prime is 804761617657. The reversal of 804761617631 is 136716167408.

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

It is a cyclic number.

It is not a de Polignac number, because 804761617631 - 2¹⁸ = 804761355487 is a prime.

It is a super-2 number, since 2×804761617631² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 804761617631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804761617031) 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, 1095446 + ... + 1676163.

It is an arithmetic number, because the mean of its divisors is an integer number (201191169900).

Almost surely, 2^804761617631 is an apocalyptic number.

804761617631 is a deficient number, since it is larger than the sum of its proper divisors (3061969).

804761617631 is a wasteful number, since it uses less digits than its factorization.

804761617631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061968.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 804761617631 in words is "eight hundred four billion, seven hundred sixty-one million, six hundred seventeen thousand, six hundred thirty-one".