1036661 has 2 divisors, whose sum is σ = 1036662. Its totient is φ = 1036660.

The previous prime is 1036649. The next prime is 1036667. The reversal of 1036661 is 1666301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555025 + 481636 = 745^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 1036661 - 2¹⁰ = 1035637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1036667) 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 as a sum of consecutive naturals, namely, 518330 + 518331.

It is an arithmetic number, because the mean of its divisors is an integer number (518331).

2^1036661 is an apocalyptic number.

It is an amenable number.

1036661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1036661 is an equidigital number, since it uses as much as digits as its factorization.

1036661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1036661 is about 1018.1655071745. The cubic root of 1036661 is about 101.2073965962.

The spelling of 1036661 in words is "one million, thirty-six thousand, six hundred sixty-one".