86784634 has 16 divisors (see below), whose sum is σ = 133993440. Its totient is φ = 42138160.

The previous prime is 86784619. The next prime is 86784637. The reversal of 86784634 is 43648768.

It is not an unprimeable number, because it can be changed into a prime (86784637) 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, 5364 + ... + 14224.

It is an arithmetic number, because the mean of its divisors is an integer number (8374590).

Almost surely, 2^86784634 is an apocalyptic number.

86784634 is a deficient number, since it is larger than the sum of its proper divisors (47208806).

86784634 is a wasteful number, since it uses less digits than its factorization.

86784634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9005.

The product of its digits is 774144, while the sum is 46.

The square root of 86784634 is about 9315.8270700996. The cubic root of 86784634 is about 442.7388290154.

The spelling of 86784634 in words is "eighty-six million, seven hundred eighty-four thousand, six hundred thirty-four".