82317773 has 4 divisors (see below), whose sum is σ = 82354620. Its totient is φ = 82280928.

The previous prime is 82317751. The next prime is 82317779. The reversal of 82317773 is 37771328.

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 35010889 + 47306884 = 5917^2 + 6878^2 .

It is a cyclic number.

It is not a de Polignac number, because 82317773 - 2⁸ = 82317517 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 (82317779) 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, 14840 + ... + 19617.

It is an arithmetic number, because the mean of its divisors is an integer number (20588655).

Almost surely, 2^82317773 is an apocalyptic number.

It is an amenable number.

82317773 is a deficient number, since it is larger than the sum of its proper divisors (36847).

82317773 is a wasteful number, since it uses less digits than its factorization.

82317773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36846.

The product of its digits is 49392, while the sum is 38.

The square root of 82317773 is about 9072.9142506694. The cubic root of 82317773 is about 435.0086280052.

The spelling of 82317773 in words is "eighty-two million, three hundred seventeen thousand, seven hundred seventy-three".