3766891 has 2 divisors, whose sum is σ = 3766892. Its totient is φ = 3766890.

The previous prime is 3766853. The next prime is 3766907. The reversal of 3766891 is 1986673.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3766891 - 2¹¹ = 3764843 is a prime.

It is not a weakly prime, because it can be changed into another prime (3766591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1883445 + 1883446.

It is an arithmetic number, because the mean of its divisors is an integer number (1883446).

Almost surely, 2^3766891 is an apocalyptic number.

3766891 is the 1228-th centered pentagonal number.

3766891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3766891 is an equidigital number, since it uses as much as digits as its factorization.

3766891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 3766891 is about 1940.8480105356. The cubic root of 3766891 is about 155.5945393413.

The spelling of 3766891 in words is "three million, seven hundred sixty-six thousand, eight hundred ninety-one".