85807807 has 4 divisors (see below), whose sum is σ = 86841720. Its totient is φ = 84773896.

The previous prime is 85807769. The next prime is 85807817. The reversal of 85807807 is 70870858.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85807807 - 2⁷ = 85807679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85807817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516832 + ... + 516997.

It is an arithmetic number, because the mean of its divisors is an integer number (21710430).

Almost surely, 2^85807807 is an apocalyptic number.

85807807 is a deficient number, since it is larger than the sum of its proper divisors (1033913).

85807807 is a wasteful number, since it uses less digits than its factorization.

85807807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033912.

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 85807807 is about 9263.2503474752. The cubic root of 85807807 is about 441.0714367095.

The spelling of 85807807 in words is "eighty-five million, eight hundred seven thousand, eight hundred seven".