744780213 has 12 divisors (see below), whose sum is σ = 1087882380. Its totient is φ = 490940736.

The previous prime is 744780199. The next prime is 744780263. The reversal of 744780213 is 312087447.

It is a happy number.

744780213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 194267844 + 550512369 = 13938^2 + 23463^2 .

It is not a de Polignac number, because 744780213 - 2⁸ = 744779957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744780263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464106 + ... + 465707.

It is an arithmetic number, because the mean of its divisors is an integer number (90656865).

Almost surely, 2^744780213 is an apocalyptic number.

It is an amenable number.

744780213 is a deficient number, since it is larger than the sum of its proper divisors (343102167).

744780213 is a wasteful number, since it uses less digits than its factorization.

744780213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929908 (or 929905 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 744780213 is about 27290.6616445992. The cubic root of 744780213 is about 906.4476137081.

The spelling of 744780213 in words is "seven hundred forty-four million, seven hundred eighty thousand, two hundred thirteen".