83504689 has 4 divisors (see below), whose sum is σ = 84036724. Its totient is φ = 82972656.

The previous prime is 83504683. The next prime is 83504693. The reversal of 83504689 is 98640538.

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 11390625 + 72114064 = 3375^2 + 8492^2 .

It is a cyclic number.

It is not a de Polignac number, because 83504689 - 2⁵ = 83504657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83504683) 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, 265782 + ... + 266095.

It is an arithmetic number, because the mean of its divisors is an integer number (21009181).

Almost surely, 2^83504689 is an apocalyptic number.

It is an amenable number.

83504689 is a deficient number, since it is larger than the sum of its proper divisors (532035).

83504689 is a wasteful number, since it uses less digits than its factorization.

83504689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532034.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 83504689 is about 9138.0900083114. The cubic root of 83504689 is about 437.0894133222.

The spelling of 83504689 in words is "eighty-three million, five hundred four thousand, six hundred eighty-nine".