84520874 has 4 divisors (see below), whose sum is σ = 126781314. Its totient is φ = 42260436.

The previous prime is 84520867. The next prime is 84520901. The reversal of 84520874 is 47802548.

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

It can be written as a sum of positive squares in only one way, i.e., 75777025 + 8743849 = 8705^2 + 2957^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21130217 + ... + 21130220.

Almost surely, 2^84520874 is an apocalyptic number.

84520874 is a deficient number, since it is larger than the sum of its proper divisors (42260440).

84520874 is a wasteful number, since it uses less digits than its factorization.

84520874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42260439.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 84520874 is about 9193.5234812339. The cubic root of 84520874 is about 438.8552785623.

The spelling of 84520874 in words is "eighty-four million, five hundred twenty thousand, eight hundred seventy-four".