84875638 has 4 divisors (see below), whose sum is σ = 127313460. Its totient is φ = 42437818.

The previous prime is 84875633. The next prime is 84875647. The reversal of 84875638 is 83657848.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 84875591 and 84875600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84875633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21218908 + ... + 21218911.

It is an arithmetic number, because the mean of its divisors is an integer number (31828365).

Almost surely, 2^84875638 is an apocalyptic number.

84875638 is a deficient number, since it is larger than the sum of its proper divisors (42437822).

84875638 is a wasteful number, since it uses less digits than its factorization.

84875638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42437821.

The product of its digits is 1290240, while the sum is 49.

The square root of 84875638 is about 9212.7975121567. The cubic root of 84875638 is about 439.4684317574.

The spelling of 84875638 in words is "eighty-four million, eight hundred seventy-five thousand, six hundred thirty-eight".