1335661 has 2 divisors, whose sum is σ = 1335662. Its totient is φ = 1335660.

The previous prime is 1335647. The next prime is 1335667. The reversal of 1335661 is 1665331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 837225 + 498436 = 915^2 + 706^2 .

It is a cyclic number.

It is not a de Polignac number, because 1335661 - 2⁷ = 1335533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1335667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667830 + 667831.

It is an arithmetic number, because the mean of its divisors is an integer number (667831).

2^1335661 is an apocalyptic number.

It is an amenable number.

1335661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1335661 is an equidigital number, since it uses as much as digits as its factorization.

1335661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 25.

The square root of 1335661 is about 1155.7080081059. The cubic root of 1335661 is about 110.1282526118.

The spelling of 1335661 in words is "one million, three hundred thirty-five thousand, six hundred sixty-one".