86554789 has 4 divisors (see below), whose sum is σ = 86578956. Its totient is φ = 86530624.

The previous prime is 86554781. The next prime is 86554799. The reversal of 86554789 is 98745568.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60186564 + 26368225 = 7758^2 + 5135^2 .

It is a cyclic number.

It is not a de Polignac number, because 86554789 - 2³ = 86554781 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 (86554781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5524 + ... + 14269.

It is an arithmetic number, because the mean of its divisors is an integer number (21644739).

Almost surely, 2^86554789 is an apocalyptic number.

It is an amenable number.

86554789 is a deficient number, since it is larger than the sum of its proper divisors (24167).

86554789 is a wasteful number, since it uses less digits than its factorization.

86554789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24166.

The product of its digits is 2419200, while the sum is 52.

The square root of 86554789 is about 9303.4826274896. The cubic root of 86554789 is about 442.3476258322.

The spelling of 86554789 in words is "eighty-six million, five hundred fifty-four thousand, seven hundred eighty-nine".