82173711 has 8 divisors (see below), whose sum is σ = 109804464. Its totient is φ = 54662720.

The previous prime is 82173677. The next prime is 82173757. The reversal of 82173711 is 11737128.

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-82173711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82173761) 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 7 ways as a sum of consecutive naturals, for example, 28326 + ... + 31091.

It is an arithmetic number, because the mean of its divisors is an integer number (13725558).

Almost surely, 2^82173711 is an apocalyptic number.

82173711 is a deficient number, since it is larger than the sum of its proper divisors (27630753).

82173711 is a wasteful number, since it uses less digits than its factorization.

82173711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59881.

The product of its digits is 2352, while the sum is 30.

The square root of 82173711 is about 9064.9716491559. The cubic root of 82173711 is about 434.7547144042.

The spelling of 82173711 in words is "eighty-two million, one hundred seventy-three thousand, seven hundred eleven".