85011783 has 4 divisors (see below), whose sum is σ = 113349048. Its totient is φ = 56674520.

The previous prime is 85011769. The next prime is 85011791. The reversal of 85011783 is 38711058.

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 85011783 - 2¹³ = 85003591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85011763) 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, 14168628 + ... + 14168633.

It is an arithmetic number, because the mean of its divisors is an integer number (28337262).

Almost surely, 2^85011783 is an apocalyptic number.

85011783 is a deficient number, since it is larger than the sum of its proper divisors (28337265).

85011783 is a wasteful number, since it uses less digits than its factorization.

85011783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28337264.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 85011783 is about 9220.1834580446. The cubic root of 85011783 is about 439.7032830787.

The spelling of 85011783 in words is "eighty-five million, eleven thousand, seven hundred eighty-three".