84709623 has 16 divisors (see below), whose sum is σ = 120293856. Its totient is φ = 52838400.

The previous prime is 84709607. The next prime is 84709627. The reversal of 84709623 is 32690748.

It is not a de Polignac number, because 84709623 - 2⁴ = 84709607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84709627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4023 + ... + 13623.

It is an arithmetic number, because the mean of its divisors is an integer number (7518366).

Almost surely, 2^84709623 is an apocalyptic number.

84709623 is a deficient number, since it is larger than the sum of its proper divisors (35584233).

84709623 is a wasteful number, since it uses less digits than its factorization.

84709623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9794.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 84709623 is about 9203.7830808858. The cubic root of 84709623 is about 439.1817143375.

The spelling of 84709623 in words is "eighty-four million, seven hundred nine thousand, six hundred twenty-three".