86684451 has 32 divisors (see below), whose sum is σ = 140375040. Its totient is φ = 46521216.

The previous prime is 86684449. The next prime is 86684471. The reversal of 86684451 is 15448668.

It is not a de Polignac number, because 86684451 - 2¹ = 86684449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86684471) 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 31 ways as a sum of consecutive naturals, for example, 20610 + ... + 24456.

It is an arithmetic number, because the mean of its divisors is an integer number (4386720).

Almost surely, 2^86684451 is an apocalyptic number.

86684451 is a deficient number, since it is larger than the sum of its proper divisors (53690589).

86684451 is a wasteful number, since it uses less digits than its factorization.

86684451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923.

The product of its digits is 184320, while the sum is 42.

The square root of 86684451 is about 9310.4484854383. The cubic root of 86684451 is about 442.5683995259.

The spelling of 86684451 in words is "eighty-six million, six hundred eighty-four thousand, four hundred fifty-one".