86725997 has 2 divisors, whose sum is σ = 86725998. Its totient is φ = 86725996.

The previous prime is 86725987. The next prime is 86725999. The reversal of 86725997 is 79952768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48706441 + 38019556 = 6979^2 + 6166^2 .

It is a cyclic number.

It is not a de Polignac number, because 86725997 - 2¹⁴ = 86709613 is a prime.

Together with 86725999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86725999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43362998 + 43362999.

It is an arithmetic number, because the mean of its divisors is an integer number (43362999).

Almost surely, 2^86725997 is an apocalyptic number.

It is an amenable number.

86725997 is a deficient number, since it is larger than the sum of its proper divisors (1).

86725997 is an equidigital number, since it uses as much as digits as its factorization.

86725997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The square root of 86725997 is about 9312.6793674001. The cubic root of 86725997 is about 442.6390927502.

The spelling of 86725997 in words is "eighty-six million, seven hundred twenty-five thousand, nine hundred ninety-seven".