2208662646 has 16 divisors (see below), whose sum is σ = 4462865904. Its totient is φ = 728630784.

The previous prime is 2208662641. The next prime is 2208662671. The reversal of 2208662646 is 6462668022.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2208662598 and 2208662607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208662641) 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, 1896895 + ... + 1898058.

It is an arithmetic number, because the mean of its divisors is an integer number (278929119).

Almost surely, 2^2208662646 is an apocalyptic number.

2208662646 is an abundant number, since it is smaller than the sum of its proper divisors (2254203258).

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

2208662646 is a wasteful number, since it uses less digits than its factorization.

2208662646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795055.

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 2208662646 is about 46996.4109906278. The cubic root of 2208662646 is about 1302.2962662370.

The spelling of 2208662646 in words is "two billion, two hundred eight million, six hundred sixty-two thousand, six hundred forty-six".