86818723 has 2 divisors, whose sum is σ = 86818724. Its totient is φ = 86818722.

The previous prime is 86818661. The next prime is 86818727. The reversal of 86818723 is 32781868.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86818723 - 2⁹ = 86818211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86818723.

It is not a weakly prime, because it can be changed into another prime (86818727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43409361 + 43409362.

It is an arithmetic number, because the mean of its divisors is an integer number (43409362).

Almost surely, 2^86818723 is an apocalyptic number.

86818723 is a deficient number, since it is larger than the sum of its proper divisors (1).

86818723 is an equidigital number, since it uses as much as digits as its factorization.

86818723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 43.

The square root of 86818723 is about 9317.6565186746. The cubic root of 86818723 is about 442.7967906905.

It can be divided in two parts, 868 and 18723, that added together give a palindrome (19591).

The spelling of 86818723 in words is "eighty-six million, eight hundred eighteen thousand, seven hundred twenty-three".