86740819 has 8 divisors (see below), whose sum is σ = 94989312. Its totient is φ = 78552840.

The previous prime is 86740781. The next prime is 86740837. The reversal of 86740819 is 91804768.

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

It is a de Polignac number, because none of the positive numbers 2^k-86740819 is a prime.

It is a super-2 number, since 2×86740819² = 15047939361581522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86740859) 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, 12099 + ... + 17884.

It is an arithmetic number, because the mean of its divisors is an integer number (11873664).

Almost surely, 2^86740819 is an apocalyptic number.

86740819 is a deficient number, since it is larger than the sum of its proper divisors (8248493).

86740819 is a wasteful number, since it uses less digits than its factorization.

86740819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30257.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 86740819 is about 9313.4751301542. The cubic root of 86740819 is about 442.6643078842.

The spelling of 86740819 in words is "eighty-six million, seven hundred forty thousand, eight hundred nineteen".