733921 has 2 divisors, whose sum is σ = 733922. Its totient is φ = 733920.

The previous prime is 733919. The next prime is 733937. The reversal of 733921 is 129337.

733921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 69696 = 815^2 + 264^2 .

It is a cyclic number.

It is not a de Polignac number, because 733921 - 2¹ = 733919 is a prime.

Together with 733919, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (733981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 366960 + 366961.

It is an arithmetic number, because the mean of its divisors is an integer number (366961).

2⁷³³⁹²¹ is an apocalyptic number.

It is an amenable number.

733921 is a deficient number, since it is larger than the sum of its proper divisors (1).

733921 is an equidigital number, since it uses as much as digits as its factorization.

733921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 25.

The square root of 733921 is about 856.6918932732. The cubic root of 733921 is about 90.2020563180.

The spelling of 733921 in words is "seven hundred thirty-three thousand, nine hundred twenty-one".