86623719 has 24 divisors (see below), whose sum is σ = 144693360. Its totient is φ = 45690624.

The previous prime is 86623711. The next prime is 86623723. The reversal of 86623719 is 91732668.

It is a happy number.

It is not a de Polignac number, because 86623719 - 2³ = 86623711 is a prime.

It is a super-2 number, since 2×86623719² = 15007337386781922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86623711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20754 + ... + 24575.

It is an arithmetic number, because the mean of its divisors is an integer number (6028890).

Almost surely, 2^86623719 is an apocalyptic number.

86623719 is a deficient number, since it is larger than the sum of its proper divisors (58069641).

86623719 is a wasteful number, since it uses less digits than its factorization.

86623719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45359 (or 45352 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 86623719 is about 9307.1864169576. The cubic root of 86623719 is about 442.4650194187.

The spelling of 86623719 in words is "eighty-six million, six hundred twenty-three thousand, seven hundred nineteen".