84785769 has 12 divisors (see below), whose sum is σ = 122570292. Its totient is φ = 56476800.

The previous prime is 84785747. The next prime is 84785801. The reversal of 84785769 is 96758748.

It can be written as a sum of positive squares in 2 ways, for example, as 28355625 + 56430144 = 5325^2 + 7512^2 .

It is not a de Polignac number, because 84785769 - 2⁸ = 84785513 is a prime.

It is a super-2 number, since 2×84785769² = 14377253249842722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84785719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10149 + ... + 16509.

It is an arithmetic number, because the mean of its divisors is an integer number (10214191).

Almost surely, 2^84785769 is an apocalyptic number.

It is an amenable number.

84785769 is a deficient number, since it is larger than the sum of its proper divisors (37784523).

84785769 is a wasteful number, since it uses less digits than its factorization.

84785769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7848 (or 7845 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 84785769 is about 9207.9188202329. The cubic root of 84785769 is about 439.3132693063.

The spelling of 84785769 in words is "eighty-four million, seven hundred eighty-five thousand, seven hundred sixty-nine".