1591067 has 4 divisors (see below), whose sum is σ = 1593960. Its totient is φ = 1588176.

The previous prime is 1591033. The next prime is 1591097. The reversal of 1591067 is 7601951.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1591067 - 2¹² = 1586971 is a prime.

It is a super-3 number, since 3×1591067³ = 12083330639721893289, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1591097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338 + ... + 1815.

It is an arithmetic number, because the mean of its divisors is an integer number (398490).

2^1591067 is an apocalyptic number.

1591067 is a deficient number, since it is larger than the sum of its proper divisors (2893).

1591067 is an equidigital number, since it uses as much as digits as its factorization.

1591067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 1591067 is about 1261.3750433555. The cubic root of 1591067 is about 116.7426344229.

It can be divided in two parts, 159 and 1067, that multiplied together give a triangular number (169653 = T₅₈₂).

The spelling of 1591067 in words is "one million, five hundred ninety-one thousand, sixty-seven".