2666622708 has 144 divisors (see below), whose sum is σ = 7319894400. Its totient is φ = 847926144.

The previous prime is 2666622701. The next prime is 2666622709. The reversal of 2666622708 is 8072266662.

It is a super-2 number, since 2×2666622708² = 14221753333642506528, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666622701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1905393 + ... + 1906791.

It is an arithmetic number, because the mean of its divisors is an integer number (50832600).

Almost surely, 2^2666622708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666622708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3659947200).

2666622708 is an abundant number, since it is smaller than the sum of its proper divisors (4653271692).

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

2666622708 is a wasteful number, since it uses less digits than its factorization.

2666622708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 2666622708 is about 51639.3523197183. The cubic root of 2666622708 is about 1386.7149288501.

The spelling of 2666622708 in words is "two billion, six hundred sixty-six million, six hundred twenty-two thousand, seven hundred eight".