84870723 has 16 divisors (see below), whose sum is σ = 129507840. Its totient is φ = 48429696.

The previous prime is 84870683. The next prime is 84870743. The reversal of 84870723 is 32707848.

It is not a de Polignac number, because 84870723 - 2¹² = 84866627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84870743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15211 + ... + 20027.

It is an arithmetic number, because the mean of its divisors is an integer number (8094240).

Almost surely, 2^84870723 is an apocalyptic number.

84870723 is a deficient number, since it is larger than the sum of its proper divisors (44637117).

84870723 is a wasteful number, since it uses less digits than its factorization.

84870723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5666.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 84870723 is about 9212.5307597858. The cubic root of 84870723 is about 439.4599486438.

The spelling of 84870723 in words is "eighty-four million, eight hundred seventy thousand, seven hundred twenty-three".