86809718 has 8 divisors (see below), whose sum is σ = 137874312. Its totient is φ = 40851616.

The previous prime is 86809711. The next prime is 86809721. The reversal of 86809718 is 81790868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86809711) 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, 1276580 + ... + 1276647.

It is an arithmetic number, because the mean of its divisors is an integer number (17234289).

Almost surely, 2^86809718 is an apocalyptic number.

86809718 is a deficient number, since it is larger than the sum of its proper divisors (51064594).

86809718 is a wasteful number, since it uses less digits than its factorization.

86809718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553246.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 86809718 is about 9317.1732837809. The cubic root of 86809718 is about 442.7814809246.

The spelling of 86809718 in words is "eighty-six million, eight hundred nine thousand, seven hundred eighteen".