86684437 has 4 divisors (see below), whose sum is σ = 99067936. Its totient is φ = 74300940.

The previous prime is 86684407. The next prime is 86684449. The reversal of 86684437 is 73448668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-86684437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86684407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6191739 + ... + 6191752.

It is an arithmetic number, because the mean of its divisors is an integer number (24766984).

Almost surely, 2^86684437 is an apocalyptic number.

It is an amenable number.

86684437 is a deficient number, since it is larger than the sum of its proper divisors (12383499).

86684437 is a wasteful number, since it uses less digits than its factorization.

86684437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12383498.

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

The square root of 86684437 is about 9310.4477335948. The cubic root of 86684437 is about 442.5683757001.

The spelling of 86684437 in words is "eighty-six million, six hundred eighty-four thousand, four hundred thirty-seven".