1587668 has 12 divisors (see below), whose sum is σ = 2831220. Its totient is φ = 778752.

The previous prime is 1587653. The next prime is 1587673. The reversal of 1587668 is 8667851.

It can be written as a sum of positive squares in 2 ways, for example, as 976144 + 611524 = 988^2 + 782^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3533 + ... + 3956.

It is an arithmetic number, because the mean of its divisors is an integer number (235935).

2^1587668 is an apocalyptic number.

It is an amenable number.

1587668 is a deficient number, since it is larger than the sum of its proper divisors (1243552).

1587668 is a wasteful number, since it uses less digits than its factorization.

1587668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7546 (or 7544 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 1587668 is about 1260.0269838380. The cubic root of 1587668 is about 116.6594426366.

The spelling of 1587668 in words is "one million, five hundred eighty-seven thousand, six hundred sixty-eight".