86465261 has 2 divisors, whose sum is σ = 86465262. Its totient is φ = 86465260.

The previous prime is 86465251. The next prime is 86465321. The reversal of 86465261 is 16256468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67158025 + 19307236 = 8195^2 + 4394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86465261 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86465251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43232630 + 43232631.

It is an arithmetic number, because the mean of its divisors is an integer number (43232631).

Almost surely, 2^86465261 is an apocalyptic number.

It is an amenable number.

86465261 is a deficient number, since it is larger than the sum of its proper divisors (1).

86465261 is an equidigital number, since it uses as much as digits as its factorization.

86465261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 86465261 is about 9298.6698511131. The cubic root of 86465261 is about 442.1950590366.

The spelling of 86465261 in words is "eighty-six million, four hundred sixty-five thousand, two hundred sixty-one".