2220407 has 8 divisors (see below), whose sum is σ = 2606496. Its totient is φ = 1851552.

The previous prime is 2220403. The next prime is 2220409. The reversal of 2220407 is 7040222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2220407 - 2² = 2220403 is a prime.

It is an Ulam number.

It is a Duffinian number.

2220407 is a modest number, since divided by 407 gives 222 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4028 + ... + 4545.

It is an arithmetic number, because the mean of its divisors is an integer number (325812).

2^2220407 is an apocalyptic number.

2220407 is a deficient number, since it is larger than the sum of its proper divisors (386089).

2220407 is an equidigital number, since it uses as much as digits as its factorization.

2220407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 2220407 is about 1490.1030165730. The cubic root of 2220407 is about 130.4600465862.

Adding to 2220407 its reverse (7040222), we get a palindrome (9260629).

The spelling of 2220407 in words is "two million, two hundred twenty thousand, four hundred seven".