1974887 has 2 divisors, whose sum is σ = 1974888. Its totient is φ = 1974886.

The previous prime is 1974883. The next prime is 1974919. The reversal of 1974887 is 7884791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1974887 - 2² = 1974883 is a prime.

It is a Chen 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 (1974881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987443 + 987444.

It is an arithmetic number, because the mean of its divisors is an integer number (987444).

2^1974887 is an apocalyptic number.

1974887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1974887 is an equidigital number, since it uses as much as digits as its factorization.

1974887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 44.

The square root of 1974887 is about 1405.3067280847. The cubic root of 1974887 is about 125.4625423257.

The spelling of 1974887 in words is "one million, nine hundred seventy-four thousand, eight hundred eighty-seven".