86912689 has 4 divisors (see below), whose sum is σ = 87302656. Its totient is φ = 86522724.

The previous prime is 86912671. The next prime is 86912711. The reversal of 86912689 is 98621968.

It is a happy number.

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 cyclic number.

It is not a de Polignac number, because 86912689 - 2²³ = 78524081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86912629) 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, 194649 + ... + 195094.

It is an arithmetic number, because the mean of its divisors is an integer number (21825664).

Almost surely, 2^86912689 is an apocalyptic number.

It is an amenable number.

86912689 is a deficient number, since it is larger than the sum of its proper divisors (389967).

86912689 is a wasteful number, since it uses less digits than its factorization.

86912689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389966.

The product of its digits is 373248, while the sum is 49.

The square root of 86912689 is about 9322.6975173498. The cubic root of 86912689 is about 442.9564829771.

The spelling of 86912689 in words is "eighty-six million, nine hundred twelve thousand, six hundred eighty-nine".