84278875 has 8 divisors (see below), whose sum is σ = 105180192. Its totient is φ = 67423000.

The previous prime is 84278869. The next prime is 84278879. The reversal of 84278875 is 57887248.

It is a de Polignac number, because none of the positive numbers 2^k-84278875 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84278879) 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, 336991 + ... + 337240.

It is an arithmetic number, because the mean of its divisors is an integer number (13147524).

Almost surely, 2^84278875 is an apocalyptic number.

84278875 is a deficient number, since it is larger than the sum of its proper divisors (20901317).

84278875 is an equidigital number, since it uses as much as digits as its factorization.

84278875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674246 (or 674236 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 49.

The square root of 84278875 is about 9180.3526620713. The cubic root of 84278875 is about 438.4360367258.

The spelling of 84278875 in words is "eighty-four million, two hundred seventy-eight thousand, eight hundred seventy-five".