84700847 has 16 divisors (see below), whose sum is σ = 106485504. Its totient is φ = 65993400.

The previous prime is 84700843. The next prime is 84700849. The reversal of 84700847 is 74800748.

It is not a de Polignac number, because 84700847 - 2² = 84700843 is a prime.

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 84700847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84700843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4772 + ... + 13862.

It is an arithmetic number, because the mean of its divisors is an integer number (6655344).

Almost surely, 2^84700847 is an apocalyptic number.

84700847 is a deficient number, since it is larger than the sum of its proper divisors (21784657).

84700847 is an equidigital number, since it uses as much as digits as its factorization.

84700847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9131 (or 9109 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 84700847 is about 9203.3063080613. The cubic root of 84700847 is about 439.1665472617.

Subtracting from 84700847 its reverse (74800748), we obtain a palindrome (9900099).

It can be divided in two parts, 84700 and 847, that multiplied together give a square (71740900 = 8470²).

The spelling of 84700847 in words is "eighty-four million, seven hundred thousand, eight hundred forty-seven".