86730919 has 8 divisors (see below), whose sum is σ = 95108112. Its totient is φ = 78435840.

The previous prime is 86730913. The next prime is 86730929. The reversal of 86730919 is 91903768.

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

It is a cyclic number.

It is not a de Polignac number, because 86730919 - 2⁹ = 86730407 is a prime.

It is a super-2 number, since 2×86730919² = 15044504621169122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86730913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18304 + ... + 22549.

It is an arithmetic number, because the mean of its divisors is an integer number (11888514).

Almost surely, 2^86730919 is an apocalyptic number.

86730919 is a deficient number, since it is larger than the sum of its proper divisors (8377193).

86730919 is a wasteful number, since it uses less digits than its factorization.

86730919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41057.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 86730919 is about 9312.9436270172. The cubic root of 86730919 is about 442.6474663578.

The spelling of 86730919 in words is "eighty-six million, seven hundred thirty thousand, nine hundred nineteen".