3766405 has 8 divisors (see below), whose sum is σ = 4587552. Its totient is φ = 2967888.

The previous prime is 3766397. The next prime is 3766409. The reversal of 3766405 is 5046673.

3766405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3766405 - 2³ = 3766397 is a prime.

It is a Duffinian number.

3766405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3766409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5287 + ... + 5956.

It is an arithmetic number, because the mean of its divisors is an integer number (573444).

Almost surely, 2^3766405 is an apocalyptic number.

It is an amenable number.

3766405 is a deficient number, since it is larger than the sum of its proper divisors (821147).

3766405 is a wasteful number, since it uses less digits than its factorization.

3766405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11315.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 3766405 is about 1940.7228034936. The cubic root of 3766405 is about 155.5878475099.

The spelling of 3766405 in words is "three million, seven hundred sixty-six thousand, four hundred five".