82709917 has 8 divisors (see below), whose sum is σ = 84257280. Its totient is φ = 81167520.

The previous prime is 82709873. The next prime is 82709929. The reversal of 82709917 is 71990728.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82709917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82709987) 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, 55492 + ... + 56962.

It is an arithmetic number, because the mean of its divisors is an integer number (10532160).

Almost surely, 2^82709917 is an apocalyptic number.

It is an amenable number.

82709917 is a deficient number, since it is larger than the sum of its proper divisors (1547363).

82709917 is a wasteful number, since it uses less digits than its factorization.

82709917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 82709917 is about 9094.4992715377. The cubic root of 82709917 is about 435.6982962408.

The spelling of 82709917 in words is "eighty-two million, seven hundred nine thousand, nine hundred seventeen".