744678 has 24 divisors (see below), whose sum is σ = 1760616. Its totient is φ = 225600.

The previous prime is 744677. The next prime is 744701. The reversal of 744678 is 876447.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744677) 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, 1683 + ... + 2078.

It is an arithmetic number, because the mean of its divisors is an integer number (73359).

2⁷⁴⁴⁶⁷⁸ is an apocalyptic number.

744678 is an abundant number, since it is smaller than the sum of its proper divisors (1015938).

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

744678 is a wasteful number, since it uses less digits than its factorization.

744678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780 (or 3777 counting only the distinct ones).

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

The square root of 744678 is about 862.9472753303. The cubic root of 744678 is about 90.6406145112.

Subtracting 744678 from its reverse (876447), we obtain a square (131769 = 363²).

The spelling of 744678 in words is "seven hundred forty-four thousand, six hundred seventy-eight".