11733721 has 2 divisors, whose sum is σ = 11733722. Its totient is φ = 11733720.

The previous prime is 11733713. The next prime is 11733737. The reversal of 11733721 is 12733711.

11733721 is digitally balanced in base 2 and base 3, because in such bases 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., 6734025 + 4999696 = 2595^2 + 2236^2 .

It is a cyclic number.

It is not a de Polignac number, because 11733721 - 2³ = 11733713 is a prime.

It is not a weakly prime, because it can be changed into another prime (11733751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5866860 + 5866861.

It is an arithmetic number, because the mean of its divisors is an integer number (5866861).

Almost surely, 2^11733721 is an apocalyptic number.

It is an amenable number.

11733721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11733721 is an equidigital number, since it uses as much as digits as its factorization.

11733721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882, while the sum is 25.

The square root of 11733721 is about 3425.4519409853. The cubic root of 11733721 is about 227.2367586763.

The spelling of 11733721 in words is "eleven million, seven hundred thirty-three thousand, seven hundred twenty-one".