2205640407 has 8 divisors (see below), whose sum is σ = 3068717184. Its totient is φ = 1406495288.

The previous prime is 2205640391. The next prime is 2205640427. The reversal of 2205640407 is 7040465022.

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 2205640407 - 2⁴ = 2205640391 is a prime.

It is a super-2 number, since 2×2205640407² = 9729699209982251298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205640427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15982833 + ... + 15982970.

It is an arithmetic number, because the mean of its divisors is an integer number (383589648).

Almost surely, 2^2205640407 is an apocalyptic number.

2205640407 is a deficient number, since it is larger than the sum of its proper divisors (863076777).

2205640407 is a wasteful number, since it uses less digits than its factorization.

2205640407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31965829.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 2205640407 is about 46964.2460495215. The cubic root of 2205640407 is about 1301.7019930230.

The spelling of 2205640407 in words is "two billion, two hundred five million, six hundred forty thousand, four hundred seven".