744736 has 36 divisors (see below), whose sum is σ = 1595538. Its totient is φ = 340992.

The previous prime is 744727. The next prime is 744739. The reversal of 744736 is 637447.

It can be written as a sum of positive squares in 3 ways, for example, as 712336 + 32400 = 844^2 + 180^2 .

Its product of digits (14112) is a multiple of the sum of its prime divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 744698 and 744707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20110 + ... + 20146.

2⁷⁴⁴⁷³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 744736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (797769).

744736 is an abundant number, since it is smaller than the sum of its proper divisors (850802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

744736 is a wasteful number, since it uses less digits than its factorization.

744736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 56 counting only the distinct ones).

The product of its digits is 14112, while the sum is 31.

The square root of 744736 is about 862.9808804371. The cubic root of 744736 is about 90.6429676622.

It can be divided in two parts, 74 and 4736, that multiplied together give a square (350464 = 592²).

The spelling of 744736 in words is "seven hundred forty-four thousand, seven hundred thirty-six".