1587887 has 8 divisors (see below), whose sum is σ = 1910400. Its totient is φ = 1289304.

The previous prime is 1587877. The next prime is 1587899. The reversal of 1587887 is 7887851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1587887 - 2⁴ = 1587871 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5837 + ... + 6102.

It is an arithmetic number, because the mean of its divisors is an integer number (238800).

2^1587887 is an apocalyptic number.

1587887 is a deficient number, since it is larger than the sum of its proper divisors (322513).

1587887 is a wasteful number, since it uses less digits than its factorization.

1587887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11965.

The product of its digits is 125440, while the sum is 44.

The square root of 1587887 is about 1260.1138837423. The cubic root of 1587887 is about 116.6648063195.

The spelling of 1587887 in words is "one million, five hundred eighty-seven thousand, eight hundred eighty-seven".