82717801 has 4 divisors (see below), whose sum is σ = 87583572. Its totient is φ = 77852032.

The previous prime is 82717793. The next prime is 82717807. The reversal of 82717801 is 10871728.

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 75690000 + 7027801 = 8700^2 + 2651^2 .

It is a cyclic number.

It is not a de Polignac number, because 82717801 - 2³ = 82717793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82717807) 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, 2432860 + ... + 2432893.

It is an arithmetic number, because the mean of its divisors is an integer number (21895893).

Almost surely, 2^82717801 is an apocalyptic number.

It is an amenable number.

82717801 is a deficient number, since it is larger than the sum of its proper divisors (4865771).

82717801 is a wasteful number, since it uses less digits than its factorization.

82717801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865770.

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 82717801 is about 9094.9327100314. The cubic root of 82717801 is about 435.7121395474.

The spelling of 82717801 in words is "eighty-two million, seven hundred seventeen thousand, eight hundred one".