2666733788 has 6 divisors (see below), whose sum is σ = 4666784136. Its totient is φ = 1333366892.

The previous prime is 2666733737. The next prime is 2666733791. The reversal of 2666733788 is 8873376662.

It is a happy number.

It is a super-2 number, since 2×2666733788² = 14222938192121657888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333341720 + ... + 333341727.

It is an arithmetic number, because the mean of its divisors is an integer number (777797356).

Almost surely, 2^2666733788 is an apocalyptic number.

It is an amenable number.

2666733788 is a deficient number, since it is larger than the sum of its proper divisors (2000050348).

2666733788 is a wasteful number, since it uses less digits than its factorization.

2666733788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666683451 (or 666683449 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 56.

The square root of 2666733788 is about 51640.4278448581. The cubic root of 2666733788 is about 1386.7341834370.

The spelling of 2666733788 in words is "two billion, six hundred sixty-six million, seven hundred thirty-three thousand, seven hundred eighty-eight".