86648251 has 2 divisors, whose sum is σ = 86648252. Its totient is φ = 86648250.

The previous prime is 86648231. The next prime is 86648357. The reversal of 86648251 is 15284668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86648251 - 2⁷ = 86648123 is a prime.

It is not a weakly prime, because it can be changed into another prime (86648231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43324125 + 43324126.

It is an arithmetic number, because the mean of its divisors is an integer number (43324126).

Almost surely, 2^86648251 is an apocalyptic number.

86648251 is a deficient number, since it is larger than the sum of its proper divisors (1).

86648251 is an equidigital number, since it uses as much as digits as its factorization.

86648251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 40.

The square root of 86648251 is about 9308.5042300039. The cubic root of 86648251 is about 442.5067844513.

The spelling of 86648251 in words is "eighty-six million, six hundred forty-eight thousand, two hundred fifty-one".