866996807 has 2 divisors, whose sum is σ = 866996808. Its totient is φ = 866996806.

The previous prime is 866996773. The next prime is 866996813. The reversal of 866996807 is 708699668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866996807 - 2⁶ = 866996743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866996857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433498403 + 433498404.

It is an arithmetic number, because the mean of its divisors is an integer number (433498404).

Almost surely, 2^866996807 is an apocalyptic number.

866996807 is a deficient number, since it is larger than the sum of its proper divisors (1).

866996807 is an equidigital number, since it uses as much as digits as its factorization.

866996807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The square root of 866996807 is about 29444.8095086384. The cubic root of 866996807 is about 953.5405490225.

The spelling of 866996807 in words is "eight hundred sixty-six million, nine hundred ninety-six thousand, eight hundred seven".