85785807 has 4 divisors (see below), whose sum is σ = 114381080. Its totient is φ = 57190536.

The previous prime is 85785803. The next prime is 85785811. The reversal of 85785807 is 70858758.

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

It is an interprime number because it is at equal distance from previous prime (85785803) and next prime (85785811).

It is not a de Polignac number, because 85785807 - 2² = 85785803 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 (85785803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14297632 + ... + 14297637.

It is an arithmetic number, because the mean of its divisors is an integer number (28595270).

Almost surely, 2^85785807 is an apocalyptic number.

85785807 is a deficient number, since it is larger than the sum of its proper divisors (28595273).

85785807 is a wasteful number, since it uses less digits than its factorization.

85785807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28595272.

The product of its (nonzero) digits is 627200, while the sum is 48.

The square root of 85785807 is about 9262.0627832033. The cubic root of 85785807 is about 441.0337385040.

The spelling of 85785807 in words is "eighty-five million, seven hundred eighty-five thousand, eight hundred seven".