1287675 has 36 divisors (see below), whose sum is σ = 2369640. Its totient is φ = 668160.

The previous prime is 1287661. The next prime is 1287683. The reversal of 1287675 is 5767821.

It is not a de Polignac number, because 1287675 - 2⁹ = 1287163 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13227 + ... + 13323.

2^1287675 is an apocalyptic number.

1287675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1287675 is a deficient number, since it is larger than the sum of its proper divisors (1081965).

1287675 is a wasteful number, since it uses less digits than its factorization.

1287675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 164 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 1287675 is about 1134.7576833844. The cubic root of 1287675 is about 108.7932843948.

The spelling of 1287675 in words is "one million, two hundred eighty-seven thousand, six hundred seventy-five".