1594661 has 2 divisors, whose sum is σ = 1594662. Its totient is φ = 1594660.

The previous prime is 1594657. The next prime is 1594669. The reversal of 1594661 is 1664951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113025 + 481636 = 1055^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 1594661 - 2² = 1594657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1594669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 797330 + 797331.

It is an arithmetic number, because the mean of its divisors is an integer number (797331).

2^1594661 is an apocalyptic number.

It is an amenable number.

1594661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1594661 is an equidigital number, since it uses as much as digits as its factorization.

1594661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 1594661 is about 1262.7988755142. The cubic root of 1594661 is about 116.8304701342.

The spelling of 1594661 in words is "one million, five hundred ninety-four thousand, six hundred sixty-one".