2217874690 has 16 divisors (see below), whose sum is σ = 3995520120. Its totient is φ = 886406400.

The previous prime is 2217874651. The next prime is 2217874691. The reversal of 2217874690 is 964787122.

It can be written as a sum of positive squares in 4 ways, for example, as 631366129 + 1586508561 = 25127^2 + 39831^2 .

It is a super-2 number, since 2×2217874690² = 9837936281085192200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2217874690.

It is not an unprimeable number, because it can be changed into a prime (2217874691) 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, 80325 + ... + 104344.

Almost surely, 2^2217874690 is an apocalyptic number.

2217874690 is a deficient number, since it is larger than the sum of its proper divisors (1777645430).

2217874690 is a wasteful number, since it uses less digits than its factorization.

2217874690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185877.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 2217874690 is about 47094.3169607544. The cubic root of 2217874690 is about 1304.1043241619.

The spelling of 2217874690 in words is "two billion, two hundred seventeen million, eight hundred seventy-four thousand, six hundred ninety".