1587966 has 32 divisors (see below), whose sum is σ = 3414528. Its totient is φ = 491040.

The previous prime is 1587961. The next prime is 1587973. The reversal of 1587966 is 6697851.

1587966 = T₅ + T₆ + ... + T₂₁₁.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4951 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (106704).

2^1587966 is an apocalyptic number.

1587966 is an abundant number, since it is smaller than the sum of its proper divisors (1826562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1587966 is a wasteful number, since it uses less digits than its factorization.

With its successor (1587967) it forms an eRAP, since the sums of their prime factors are consecutive (376 and 377).

1587966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376.

The product of its digits is 90720, while the sum is 42.

The square root of 1587966 is about 1260.1452297255. The cubic root of 1587966 is about 116.6667410430. Note that the first 3 decimals are identical.

The spelling of 1587966 in words is "one million, five hundred eighty-seven thousand, nine hundred sixty-six".