1587089 has 8 divisors (see below), whose sum is σ = 1909440. Its totient is φ = 1288656.

The previous prime is 1587077. The next prime is 1587101. The reversal of 1587089 is 9807851.

It is an interprime number because it is at equal distance from previous prime (1587077) and next prime (1587101).

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

It is not a de Polignac number, because 1587089 - 2²⁰ = 538513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1587389) 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, 5834 + ... + 6099.

It is an arithmetic number, because the mean of its divisors is an integer number (238680).

2^1587089 is an apocalyptic number.

1587089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1587089 is a deficient number, since it is larger than the sum of its proper divisors (322351).

1587089 is a wasteful number, since it uses less digits than its factorization.

1587089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1587089 is about 1259.7972059026. The cubic root of 1587089 is about 116.6452595643.

The spelling of 1587089 in words is "one million, five hundred eighty-seven thousand, eighty-nine".