86806551 has 32 divisors (see below), whose sum is σ = 131084800. Its totient is φ = 50730624.

The previous prime is 86806549. The next prime is 86806589. The reversal of 86806551 is 15560868.

It is not a de Polignac number, because 86806551 - 2¹ = 86806549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86806591) 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 31 ways as a sum of consecutive naturals, for example, 61350 + ... + 62748.

It is an arithmetic number, because the mean of its divisors is an integer number (4096400).

Almost surely, 2^86806551 is an apocalyptic number.

86806551 is a deficient number, since it is larger than the sum of its proper divisors (44278249).

86806551 is a wasteful number, since it uses less digits than its factorization.

86806551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 86806551 is about 9317.0033272507. The cubic root of 86806551 is about 442.7760963277.

The spelling of 86806551 in words is "eighty-six million, eight hundred six thousand, five hundred fifty-one".