1897087 has 2 divisors, whose sum is σ = 1897088. Its totient is φ = 1897086.

The previous prime is 1897079. The next prime is 1897097. The reversal of 1897087 is 7807981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1897087 - 2³ = 1897079 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 (1897037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948543 + 948544.

It is an arithmetic number, because the mean of its divisors is an integer number (948544).

2^1897087 is an apocalyptic number.

1897087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897087 is an equidigital number, since it uses as much as digits as its factorization.

1897087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1897087 is about 1377.3478137348. The cubic root of 1897087 is about 123.7929035335.

The spelling of 1897087 in words is "one million, eight hundred ninety-seven thousand, eighty-seven".