83725689 has 4 divisors (see below), whose sum is σ = 111634256. Its totient is φ = 55817124.

The previous prime is 83725657. The next prime is 83725693. The reversal of 83725689 is 98652738.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 83725689 - 2⁵ = 83725657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83735689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13954279 + ... + 13954284.

It is an arithmetic number, because the mean of its divisors is an integer number (27908564).

Almost surely, 2^83725689 is an apocalyptic number.

It is an amenable number.

83725689 is a deficient number, since it is larger than the sum of its proper divisors (27908567).

83725689 is a wasteful number, since it uses less digits than its factorization.

83725689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27908566.

The product of its digits is 725760, while the sum is 48.

The square root of 83725689 is about 9150.1742606357. The cubic root of 83725689 is about 437.4746678122.

The spelling of 83725689 in words is "eighty-three million, seven hundred twenty-five thousand, six hundred eighty-nine".