84279665 has 8 divisors (see below), whose sum is σ = 101521728. Its totient is φ = 67166320.

The previous prime is 84279653. The next prime is 84279667. The reversal of 84279665 is 56697248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84279665 - 2⁸ = 84279409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84279667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30731 + ... + 33360.

It is an arithmetic number, because the mean of its divisors is an integer number (12690216).

Almost surely, 2^84279665 is an apocalyptic number.

It is an amenable number.

84279665 is a deficient number, since it is larger than the sum of its proper divisors (17242063).

84279665 is a wasteful number, since it uses less digits than its factorization.

84279665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64359.

The product of its digits is 725760, while the sum is 47.

The square root of 84279665 is about 9180.3956886400. The cubic root of 84279665 is about 438.4374066357.

The spelling of 84279665 in words is "eighty-four million, two hundred seventy-nine thousand, six hundred sixty-five".