1580887 has 16 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 1228920.

The previous prime is 1580861. The next prime is 1580897. The reversal of 1580887 is 7880851.

It is not a de Polignac number, because 1580887 - 2⁷ = 1580759 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1580897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3564 + ... + 3982.

It is an arithmetic number, because the mean of its divisors is an integer number (126000).

2^1580887 is an apocalyptic number.

1580887 is a deficient number, since it is larger than the sum of its proper divisors (435113).

1580887 is an equidigital number, since it uses as much as digits as its factorization.

1580887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 1580887 is about 1257.3332891481. Note that the first 3 decimals coincide. The cubic root of 1580887 is about 116.4931197469.

The spelling of 1580887 in words is "one million, five hundred eighty thousand, eight hundred eighty-seven".