3766766643 has 6 divisors (see below), whose sum is σ = 5440885164. Its totient is φ = 2511177756.

The previous prime is 3766766623. The next prime is 3766766711. The reversal of 3766766643 is 3466676673.

It is not a de Polignac number, because 3766766643 - 2⁶ = 3766766579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3766766643.

It is not an unprimeable number, because it can be changed into a prime (3766766623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209264805 + ... + 209264822.

It is an arithmetic number, because the mean of its divisors is an integer number (906814194).

Almost surely, 2^3766766643 is an apocalyptic number.

3766766643 is a deficient number, since it is larger than the sum of its proper divisors (1674118521).

3766766643 is a wasteful number, since it uses less digits than its factorization.

3766766643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418529633 (or 418529630 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 54.

The square root of 3766766643 is about 61373.9899550290. The cubic root of 3766766643 is about 1555.9282709967.

The spelling of 3766766643 in words is "three billion, seven hundred sixty-six million, seven hundred sixty-six thousand, six hundred forty-three".