744505406 has 16 divisors (see below), whose sum is σ = 1126245120. Its totient is φ = 369097560.

The previous prime is 744505403. The next prime is 744505409. The reversal of 744505406 is 604505447.

It is an interprime number because it is at equal distance from previous prime (744505403) and next prime (744505409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744505403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324395 + ... + 326681.

It is an arithmetic number, because the mean of its divisors is an integer number (70390320).

Almost surely, 2^744505406 is an apocalyptic number.

744505406 is a deficient number, since it is larger than the sum of its proper divisors (381739714).

744505406 is a wasteful number, since it uses less digits than its factorization.

744505406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 744505406 is about 27285.6263626108. The cubic root of 744505406 is about 906.3361137925.

The spelling of 744505406 in words is "seven hundred forty-four million, five hundred five thousand, four hundred six".