84769865 has 4 divisors (see below), whose sum is σ = 101723844. Its totient is φ = 67815888.

The previous prime is 84769819. The next prime is 84769873. The reversal of 84769865 is 56896748.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43771456 + 40998409 = 6616^2 + 6403^2 .

It is a cyclic number.

It is not a de Polignac number, because 84769865 - 2¹⁶ = 84704329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8476982 + ... + 8476991.

It is an arithmetic number, because the mean of its divisors is an integer number (25430961).

Almost surely, 2^84769865 is an apocalyptic number.

It is an amenable number.

84769865 is a deficient number, since it is larger than the sum of its proper divisors (16953979).

84769865 is a wasteful number, since it uses less digits than its factorization.

84769865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16953978.

The product of its digits is 2903040, while the sum is 53.

The square root of 84769865 is about 9207.0551752447. The cubic root of 84769865 is about 439.2857989921.

The spelling of 84769865 in words is "eighty-four million, seven hundred sixty-nine thousand, eight hundred sixty-five".