86665451 has 2 divisors, whose sum is σ = 86665452. Its totient is φ = 86665450.

The previous prime is 86665417. The next prime is 86665471. The reversal of 86665451 is 15456668.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86665451 - 2⁶ = 86665387 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86665399 and 86665408.

It is not a weakly prime, because it can be changed into another prime (86665471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43332725 + 43332726.

It is an arithmetic number, because the mean of its divisors is an integer number (43332726).

Almost surely, 2^86665451 is an apocalyptic number.

86665451 is a deficient number, since it is larger than the sum of its proper divisors (1).

86665451 is an equidigital number, since it uses as much as digits as its factorization.

86665451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The square root of 86665451 is about 9309.4280705100. The cubic root of 86665451 is about 442.5360622615.

The spelling of 86665451 in words is "eighty-six million, six hundred sixty-five thousand, four hundred fifty-one".