3766591 has 2 divisors, whose sum is σ = 3766592. Its totient is φ = 3766590.

The previous prime is 3766577. The next prime is 3766601. The reversal of 3766591 is 1956673.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3766591 - 2⁵ = 3766559 is a prime.

It is a super-2 number, since 2×3766591² = 28374415522562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3766591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3766691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1883295 + 1883296.

It is an arithmetic number, because the mean of its divisors is an integer number (1883296).

Almost surely, 2^3766591 is an apocalyptic number.

3766591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3766591 is an equidigital number, since it uses as much as digits as its factorization.

3766591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 3766591 is about 1940.7707231922. The cubic root of 3766591 is about 155.5904086492.

The spelling of 3766591 in words is "three million, seven hundred sixty-six thousand, five hundred ninety-one".