744666447 has 16 divisors (see below), whose sum is σ = 1136548352. Its totient is φ = 424841760.

The previous prime is 744666443. The next prime is 744666451.

744666447 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (744666443) and next prime (744666451).

It is not a de Polignac number, because 744666447 - 2² = 744666443 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 744666396 and 744666405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744666443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14848 + ... + 41349.

It is an arithmetic number, because the mean of its divisors is an integer number (71034272).

Almost surely, 2^744666447 is an apocalyptic number.

744666447 is a deficient number, since it is larger than the sum of its proper divisors (391881905).

744666447 is a wasteful number, since it uses less digits than its factorization.

744666447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56838.

The product of its digits is 2709504, while the sum is 48.

The square root of 744666447 is about 27288.5772256452. The cubic root of 744666447 is about 906.4014577333.

The spelling of 744666447 in words is "seven hundred forty-four million, six hundred sixty-six thousand, four hundred forty-seven".