86725999 has 2 divisors, whose sum is σ = 86726000. Its totient is φ = 86725998.

The previous prime is 86725997. The next prime is 86726009. The reversal of 86725999 is 99952768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86725999 - 2¹ = 86725997 is a prime.

Together with 86725997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86725997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43362999 + 43363000.

It is an arithmetic number, because the mean of its divisors is an integer number (43363000).

Almost surely, 2^86725999 is an apocalyptic number.

86725999 is a deficient number, since it is larger than the sum of its proper divisors (1).

86725999 is an equidigital number, since it uses as much as digits as its factorization.

86725999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 55.

The square root of 86725999 is about 9312.6794747806. The cubic root of 86725999 is about 442.6390961528.

The spelling of 86725999 in words is "eighty-six million, seven hundred twenty-five thousand, nine hundred ninety-nine".