3678891 has 4 divisors (see below), whose sum is σ = 4905192. Its totient is φ = 2452592.

The previous prime is 3678887. The next prime is 3678893. The reversal of 3678891 is 1988763.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3678891 - 2² = 3678887 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3678893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613146 + ... + 613151.

It is an arithmetic number, because the mean of its divisors is an integer number (1226298).

Almost surely, 2^3678891 is an apocalyptic number.

3678891 is a deficient number, since it is larger than the sum of its proper divisors (1226301).

3678891 is a wasteful number, since it uses less digits than its factorization.

3678891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226300.

The product of its digits is 72576, while the sum is 42.

The square root of 3678891 is about 1918.0435344382. The cubic root of 3678891 is about 154.3733422213.

The spelling of 3678891 in words is "three million, six hundred seventy-eight thousand, eight hundred ninety-one".