86644007 has 2 divisors, whose sum is σ = 86644008. Its totient is φ = 86644006.

The previous prime is 86643943. The next prime is 86644021. The reversal of 86644007 is 70044668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86644007 - 2⁶ = 86643943 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86644307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43322003 + 43322004.

It is an arithmetic number, because the mean of its divisors is an integer number (43322004).

Almost surely, 2^86644007 is an apocalyptic number.

86644007 is a deficient number, since it is larger than the sum of its proper divisors (1).

86644007 is an equidigital number, since it uses as much as digits as its factorization.

86644007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 86644007 is about 9308.2762636269. The cubic root of 86644007 is about 442.4995597259.

The spelling of 86644007 in words is "eighty-six million, six hundred forty-four thousand, seven".