749644 has 24 divisors (see below), whose sum is σ = 1538208. Its totient is φ = 312960.

The previous prime is 749641. The next prime is 749653. The reversal of 749644 is 446947.

It is a super-2 number, since 2×749644² = 1123932253472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (749641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (64092).

2⁷⁴⁹⁶⁴⁴ 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 749644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769104).

749644 is an abundant number, since it is smaller than the sum of its proper divisors (788564).

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

749644 is a wasteful number, since it uses less digits than its factorization.

749644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 703 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 749644 is about 865.8198426925. The cubic root of 749644 is about 90.8416519236.

The spelling of 749644 in words is "seven hundred forty-nine thousand, six hundred forty-four".