2666277628 has 24 divisors (see below), whose sum is σ = 5333846112. Its totient is φ = 1142413824.

The previous prime is 2666277577. The next prime is 2666277631. The reversal of 2666277628 is 8267726662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142176 + ... + 159832.

It is an arithmetic number, because the mean of its divisors is an integer number (222243588).

Almost surely, 2^2666277628 is an apocalyptic number.

2666277628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2666277628 is an abundant number, since it is smaller than the sum of its proper divisors (2667568484).

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

2666277628 is a wasteful number, since it uses less digits than its factorization.

2666277628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23061 (or 23059 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 52.

The square root of 2666277628 is about 51636.0109613436. The cubic root of 2666277628 is about 1386.6551093352.

The spelling of 2666277628 in words is "two billion, six hundred sixty-six million, two hundred seventy-seven thousand, six hundred twenty-eight".