743644 has 12 divisors (see below), whose sum is σ = 1419768. Its totient is φ = 338000.

The previous prime is 743609. The next prime is 743657. The reversal of 743644 is 446347.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8407 + ... + 8494.

It is an arithmetic number, because the mean of its divisors is an integer number (118314).

2⁷⁴³⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

743644 is a deficient number, since it is larger than the sum of its proper divisors (676124).

743644 is a wasteful number, since it uses less digits than its factorization.

743644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16916 (or 16914 counting only the distinct ones).

The product of its digits is 8064, while the sum is 28.

The square root of 743644 is about 862.3479576134. The cubic root of 743644 is about 90.5986429892.

It can be divided in two parts, 7436 and 44, that multiplied together give a square (327184 = 572²).

The spelling of 743644 in words is "seven hundred forty-three thousand, six hundred forty-four".