83565407 has 2 divisors, whose sum is σ = 83565408. Its totient is φ = 83565406.

The previous prime is 83565359. The next prime is 83565413. The reversal of 83565407 is 70456538.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83565407 - 2⁸ = 83565151 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 (83565437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41782703 + 41782704.

It is an arithmetic number, because the mean of its divisors is an integer number (41782704).

Almost surely, 2^83565407 is an apocalyptic number.

83565407 is a deficient number, since it is larger than the sum of its proper divisors (1).

83565407 is an equidigital number, since it uses as much as digits as its factorization.

83565407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 83565407 is about 9141.4116524747. The cubic root of 83565407 is about 437.1953265969.

The spelling of 83565407 in words is "eighty-three million, five hundred sixty-five thousand, four hundred seven".