2861387 has 2 divisors, whose sum is σ = 2861388. Its totient is φ = 2861386.

The previous prime is 2861377. The next prime is 2861399. The reversal of 2861387 is 7831682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2861387 - 2¹⁸ = 2599243 is a prime.

It is not a weakly prime, because it can be changed into another prime (2861317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1430693 + 1430694.

It is an arithmetic number, because the mean of its divisors is an integer number (1430694).

2^2861387 is an apocalyptic number.

2861387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2861387 is an equidigital number, since it uses as much as digits as its factorization.

2861387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 2861387 is about 1691.5634779694. The cubic root of 2861387 is about 141.9685673996.

The spelling of 2861387 in words is "two million, eight hundred sixty-one thousand, three hundred eighty-seven".