1662733 has 2 divisors, whose sum is σ = 1662734. Its totient is φ = 1662732.

The previous prime is 1662707. The next prime is 1662737. The reversal of 1662733 is 3372661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1435204 + 227529 = 1198^2 + 477^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662733 - 2⁵ = 1662701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1662737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831366 + 831367.

It is an arithmetic number, because the mean of its divisors is an integer number (831367).

2^1662733 is an apocalyptic number.

It is an amenable number.

1662733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662733 is an equidigital number, since it uses as much as digits as its factorization.

1662733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 28.

The square root of 1662733 is about 1289.4700461818. The cubic root of 1662733 is about 118.4697591179.

The spelling of 1662733 in words is "one million, six hundred sixty-two thousand, seven hundred thirty-three".