82220701 has 4 divisors (see below), whose sum is σ = 82250812. Its totient is φ = 82190592.

The previous prime is 82220683. The next prime is 82220707. The reversal of 82220701 is 10702228.

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 56475225 + 25745476 = 7515^2 + 5074^2 .

It is a cyclic number.

It is not a de Polignac number, because 82220701 - 2¹³ = 82212509 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 (82220707) 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, 10500 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (20562703).

Almost surely, 2^82220701 is an apocalyptic number.

It is an amenable number.

82220701 is a deficient number, since it is larger than the sum of its proper divisors (30111).

82220701 is a wasteful number, since it uses less digits than its factorization.

82220701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30110.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 82220701 is about 9067.5631235741. The cubic root of 82220701 is about 434.8375682795.

Adding to 82220701 its reverse (10702228), we get a palindrome (92922929).

The spelling of 82220701 in words is "eighty-two million, two hundred twenty thousand, seven hundred one".