2207666440 has 64 divisors (see below), whose sum is σ = 5808908160. Its totient is φ = 739307520.

The previous prime is 2207666437. The next prime is 2207666473. The reversal of 2207666440 is 446667022.

It is a super-2 number, since 2×2207666440² = 9747582220604547200, 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 2207666440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79641 + ... + 103720.

It is an arithmetic number, because the mean of its divisors is an integer number (90764190).

Almost surely, 2^2207666440 is an apocalyptic number.

2207666440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2207666440 is an abundant number, since it is smaller than the sum of its proper divisors (3601241720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2207666440 is a wasteful number, since it uses less digits than its factorization.

2207666440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183422 (or 183418 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 2207666440 is about 46985.8110497201. The cubic root of 2207666440 is about 1302.1004387664.

The spelling of 2207666440 in words is "two billion, two hundred seven million, six hundred sixty-six thousand, four hundred forty".