84804870631 has 4 divisors (see below), whose sum is σ = 91328322232. Its totient is φ = 78281419032.

The previous prime is 84804870611. The next prime is 84804870643. The reversal of 84804870631 is 13607840848.

It is a happy number.

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 84804870631 - 2¹¹ = 84804868583 is a prime.

It is a super-2 number, since 2×84804870631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84804870611) 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, 3261725781 + ... + 3261725806.

It is an arithmetic number, because the mean of its divisors is an integer number (22832080558).

Almost surely, 2^84804870631 is an apocalyptic number.

84804870631 is a deficient number, since it is larger than the sum of its proper divisors (6523451601).

84804870631 is a wasteful number, since it uses less digits than its factorization.

84804870631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523451600.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 84804870631 in words is "eighty-four billion, eight hundred four million, eight hundred seventy thousand, six hundred thirty-one".