86490751 has 2 divisors, whose sum is σ = 86490752. Its totient is φ = 86490750.

The previous prime is 86490739. The next prime is 86490779. The reversal of 86490751 is 15709468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86490751 - 2⁷ = 86490623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86490251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43245375 + 43245376.

It is an arithmetic number, because the mean of its divisors is an integer number (43245376).

Almost surely, 2^86490751 is an apocalyptic number.

86490751 is a deficient number, since it is larger than the sum of its proper divisors (1).

86490751 is an equidigital number, since it uses as much as digits as its factorization.

86490751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 86490751 is about 9300.0403762564. The cubic root of 86490751 is about 442.2385078718.

The spelling of 86490751 in words is "eighty-six million, four hundred ninety thousand, seven hundred fifty-one".