1585966 has 4 divisors (see below), whose sum is σ = 2378952. Its totient is φ = 792982.

The previous prime is 1585963. The next prime is 1585967. The reversal of 1585966 is 6695851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6695851 = 59 ⋅113489.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1585963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 396490 + ... + 396493.

It is an arithmetic number, because the mean of its divisors is an integer number (594738).

2^1585966 is an apocalyptic number.

1585966 is a deficient number, since it is larger than the sum of its proper divisors (792986).

1585966 is an equidigital number, since it uses as much as digits as its factorization.

1585966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792985.

The product of its digits is 64800, while the sum is 40.

The square root of 1585966 is about 1259.3514203748. The cubic root of 1585966 is about 116.6177409365.

The spelling of 1585966 in words is "one million, five hundred eighty-five thousand, nine hundred sixty-six".