85788769 has 16 divisors (see below), whose sum is σ = 96413184. Its totient is φ = 75657600.

The previous prime is 85788761. The next prime is 85788779. The reversal of 85788769 is 96788758.

It is a cyclic number.

It is not a de Polignac number, because 85788769 - 2³ = 85788761 is a prime.

It is a super-2 number, since 2×85788769² = 14719425773070722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85788761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100147 + ... + 100999.

It is an arithmetic number, because the mean of its divisors is an integer number (6025824).

Almost surely, 2^85788769 is an apocalyptic number.

It is an amenable number.

85788769 is a deficient number, since it is larger than the sum of its proper divisors (10624415).

85788769 is a wasteful number, since it uses less digits than its factorization.

85788769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its digits is 6773760, while the sum is 58.

The square root of 85788769 is about 9262.2226814086. Note that the first 3 decimals coincide. The cubic root of 85788769 is about 441.0388144288.

The spelling of 85788769 in words is "eighty-five million, seven hundred eighty-eight thousand, seven hundred sixty-nine".