1987375 has 16 divisors (see below), whose sum is σ = 2673216. Its totient is φ = 1466400.

The previous prime is 1987373. The next prime is 1987411. The reversal of 1987375 is 5737891.

It is not a de Polignac number, because 1987375 - 2¹ = 1987373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987373) 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 in 15 ways as a sum of consecutive naturals, for example, 1014 + ... + 2236.

It is an arithmetic number, because the mean of its divisors is an integer number (167076).

2^1987375 is an apocalyptic number.

1987375 is a deficient number, since it is larger than the sum of its proper divisors (685841).

1987375 is a wasteful number, since it uses less digits than its factorization.

1987375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1241 counting only the distinct ones).

The product of its digits is 52920, while the sum is 40.

The square root of 1987375 is about 1409.7428843587. The cubic root of 1987375 is about 125.7264368051.

The spelling of 1987375 in words is "one million, nine hundred eighty-seven thousand, three hundred seventy-five".