1064991 has 4 divisors (see below), whose sum is σ = 1419992. Its totient is φ = 709992.

The previous prime is 1064989. The next prime is 1065011. The reversal of 1064991 is 1994601.

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

It is not a de Polignac number, because 1064991 - 2¹ = 1064989 is a prime.

It is a super-2 number, since 2×1064991² = 2268411660162, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177496 + ... + 177501.

It is an arithmetic number, because the mean of its divisors is an integer number (354998).

2^1064991 is an apocalyptic number.

1064991 is a deficient number, since it is larger than the sum of its proper divisors (355001).

1064991 is an equidigital number, since it uses as much as digits as its factorization.

1064991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355000.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1064991 is about 1031.9840115041. The cubic root of 1064991 is about 102.1210596457.

The spelling of 1064991 in words is "one million, sixty-four thousand, nine hundred ninety-one".