82287689 has 8 divisors (see below), whose sum is σ = 94493280. Its totient is φ = 70869600.

The previous prime is 82287683. The next prime is 82287731. The reversal of 82287689 is 98678228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82287689 - 2⁸ = 82287433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82287683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196652 + ... + 197069.

It is an arithmetic number, because the mean of its divisors is an integer number (11811660).

Almost surely, 2^82287689 is an apocalyptic number.

It is an amenable number.

82287689 is a deficient number, since it is larger than the sum of its proper divisors (12205591).

82287689 is a wasteful number, since it uses less digits than its factorization.

82287689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393751.

The product of its digits is 774144, while the sum is 50.

The square root of 82287689 is about 9071.2561974624. The cubic root of 82287689 is about 434.9556285388.

The spelling of 82287689 in words is "eighty-two million, two hundred eighty-seven thousand, six hundred eighty-nine".