84634657479 has 6 divisors (see below), whose sum is σ = 122250060816. Its totient is φ = 56423104980.

The previous prime is 84634657451. The next prime is 84634657487. The reversal of 84634657479 is 97475643648.

It is a happy number.

84634657479 is a `hidden beast` number, since 84 + 6 + 34 + 6 + 57 + 479 = 666.

It is not a de Polignac number, because 84634657479 - 2¹⁷ = 84634526407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84634657279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4701925407 + ... + 4701925424.

It is an arithmetic number, because the mean of its divisors is an integer number (20375010136).

Almost surely, 2^84634657479 is an apocalyptic number.

84634657479 is a deficient number, since it is larger than the sum of its proper divisors (37615403337).

84634657479 is a wasteful number, since it uses less digits than its factorization.

84634657479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9403850837 (or 9403850834 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 63.

The spelling of 84634657479 in words is "eighty-four billion, six hundred thirty-four million, six hundred fifty-seven thousand, four hundred seventy-nine".