1433681 has 2 divisors, whose sum is σ = 1433682. Its totient is φ = 1433680.

The previous prime is 1433669. The next prime is 1433689. The reversal of 1433681 is 1863341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819025 + 614656 = 905^2 + 784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1433681 is a prime.

It is a super-2 number, since 2×1433681² = 4110882419522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1433681.

It is not a weakly prime, because it can be changed into another prime (1433689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 716840 + 716841.

It is an arithmetic number, because the mean of its divisors is an integer number (716841).

2^1433681 is an apocalyptic number.

It is an amenable number.

1433681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1433681 is an equidigital number, since it uses as much as digits as its factorization.

1433681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 1433681 is about 1197.3641885408. The cubic root of 1433681 is about 112.7589033010.

The spelling of 1433681 in words is "one million, four hundred thirty-three thousand, six hundred eighty-one".