84674390823 has 32 divisors (see below), whose sum is σ = 144897361920. Its totient is φ = 48299114880.

The previous prime is 84674390809. The next prime is 84674390851. The reversal of 84674390823 is 32809347648.

It is not a de Polignac number, because 84674390823 - 2⁴ = 84674390807 is a prime.

It is a super-2 number, since 2×84674390823² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 84674390823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84674390123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8380215 + ... + 8390312.

It is an arithmetic number, because the mean of its divisors is an integer number (4528042560).

Almost surely, 2^84674390823 is an apocalyptic number.

84674390823 is a deficient number, since it is larger than the sum of its proper divisors (60222971097).

84674390823 is a wasteful number, since it uses less digits than its factorization.

84674390823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770564 (or 16770558 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 84674390823 in words is "eighty-four billion, six hundred seventy-four million, three hundred ninety thousand, eight hundred twenty-three".