744660 has 96 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 169344.

The previous prime is 744659. The next prime is 744661. The reversal of 744660 is 66447.

It is an interprime number because it is at equal distance from previous prime (744659) and next prime (744661).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744661) 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 31 ways as a sum of consecutive naturals, for example, 3682 + ... + 3878.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2⁷⁴⁴⁶⁶⁰ is an apocalyptic number.

744660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 744660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330560).

744660 is an abundant number, since it is smaller than the sum of its proper divisors (1916460).

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

744660 is a wasteful number, since it uses less digits than its factorization.

744660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 744660 is about 862.9368458931. The cubic root of 744660 is about 90.6398841982.

The spelling of 744660 in words is "seven hundred forty-four thousand, six hundred sixty".