2220577 has 4 divisors (see below), whose sum is σ = 2242240. Its totient is φ = 2198916.

The previous prime is 2220553. The next prime is 2220643. The reversal of 2220577 is 7750222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220577 is a prime.

It is a Duffinian number.

2220577 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220527) 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, 10677 + ... + 10882.

It is an arithmetic number, because the mean of its divisors is an integer number (560560).

2^2220577 is an apocalyptic number.

It is an amenable number.

2220577 is a deficient number, since it is larger than the sum of its proper divisors (21663).

2220577 is a wasteful number, since it uses less digits than its factorization.

2220577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21662.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 2220577 is about 1490.1600585172. The cubic root of 2220577 is about 130.4633759520.

Adding to 2220577 its reverse (7750222), we get a palindrome (9970799).

The spelling of 2220577 in words is "two million, two hundred twenty thousand, five hundred seventy-seven".