86780243 has 8 divisors (see below), whose sum is σ = 95416320. Its totient is φ = 78268680.

The previous prime is 86780233. The next prime is 86780249. The reversal of 86780243 is 34208768.

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 86780243 - 2⁶ = 86780179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86780197 and 86780206.

It is not an unprimeable number, because it can be changed into a prime (86780249) 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, 29663 + ... + 32456.

It is an arithmetic number, because the mean of its divisors is an integer number (11927040).

Almost surely, 2^86780243 is an apocalyptic number.

86780243 is a deficient number, since it is larger than the sum of its proper divisors (8636077).

86780243 is a wasteful number, since it uses less digits than its factorization.

86780243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62257.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 86780243 is about 9315.5913929283. The cubic root of 86780243 is about 442.7313618756.

The spelling of 86780243 in words is "eighty-six million, seven hundred eighty thousand, two hundred forty-three".