3866787 has 6 divisors (see below), whose sum is σ = 5585372. Its totient is φ = 2577852.

The previous prime is 3866777. The next prime is 3866791. The reversal of 3866787 is 7876683.

It is not a de Polignac number, because 3866787 - 2¹⁴ = 3850403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3866717) 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, 214813 + ... + 214830.

Almost surely, 2^3866787 is an apocalyptic number.

3866787 is a deficient number, since it is larger than the sum of its proper divisors (1718585).

3866787 is a wasteful number, since it uses less digits than its factorization.

3866787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429649 (or 429646 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 3866787 is about 1966.4147578779. The cubic root of 3866787 is about 156.9579857014.

The spelling of 3866787 in words is "three million, eight hundred sixty-six thousand, seven hundred eighty-seven".