2208908664 has 32 divisors (see below), whose sum is σ = 6135858000. Its totient is φ = 736302816.

The previous prime is 2208908659. The next prime is 2208908687. The reversal of 2208908664 is 4668098022.

It is a super-3 number, since 3×2208908664³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5112999 + ... + 5113430.

Almost surely, 2^2208908664 is an apocalyptic number.

2208908664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2208908664 is an abundant number, since it is smaller than the sum of its proper divisors (3926949336).

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

2208908664 is a wasteful number, since it uses less digits than its factorization.

2208908664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226444 (or 10226434 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 2208908664 is about 46999.0283303815. The cubic root of 2208908664 is about 1302.3446177328.

The spelling of 2208908664 in words is "two billion, two hundred eight million, nine hundred eight thousand, six hundred sixty-four".