3781007 has 2 divisors, whose sum is σ = 3781008. Its totient is φ = 3781006.

The previous prime is 3780989. The next prime is 3781079. The reversal of 3781007 is 7001873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3781007 - 2¹⁶ = 3715471 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3781087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890503 + 1890504.

It is an arithmetic number, because the mean of its divisors is an integer number (1890504).

Almost surely, 2^3781007 is an apocalyptic number.

3781007 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781007 is an equidigital number, since it uses as much as digits as its factorization.

3781007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 3781007 is about 1944.4811647326. The cubic root of 3781007 is about 155.7886547415.

The spelling of 3781007 in words is "three million, seven hundred eighty-one thousand, seven".