3791687 has 2 divisors, whose sum is σ = 3791688. Its totient is φ = 3791686.

The previous prime is 3791681. The next prime is 3791701. The reversal of 3791687 is 7861973.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3791687 - 2¹² = 3787591 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3791681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1895843 + 1895844.

It is an arithmetic number, because the mean of its divisors is an integer number (1895844).

Almost surely, 2^3791687 is an apocalyptic number.

3791687 is a deficient number, since it is larger than the sum of its proper divisors (1).

3791687 is an equidigital number, since it uses as much as digits as its factorization.

3791687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 3791687 is about 1947.2254620357. The cubic root of 3791687 is about 155.9351993628.

The spelling of 3791687 in words is "three million, seven hundred ninety-one thousand, six hundred eighty-seven".