745624 has 32 divisors (see below), whose sum is σ = 1573200. Its totient is φ = 328320.

The previous prime is 745621. The next prime is 745631. The reversal of 745624 is 426547.

It is a junction number, because it is equal to n+sod(n) for n = 745592 and 745601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745621) 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, 3142 + ... + 3370.

2⁷⁴⁵⁶²⁴ is an apocalyptic number.

745624 is a gapful number since it is divisible by the number (74) 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 745624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786600).

745624 is an abundant number, since it is smaller than the sum of its proper divisors (827576).

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

745624 is a wasteful number, since it uses less digits than its factorization.

745624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 279 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 745624 is about 863.4952229167. The cubic root of 745624 is about 90.6789799693.

It can be divided in two parts, 745 and 624, that added together give a square (1369 = 37²).

The spelling of 745624 in words is "seven hundred forty-five thousand, six hundred twenty-four".