745632 has 48 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 248256.

The previous prime is 745631. The next prime is 745649. The reversal of 745632 is 236547.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 745596 and 745605.

It is not an unprimeable number, because it can be changed into a prime (745631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433 + ... + 1295.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁷⁴⁵⁶³² is an apocalyptic number.

745632 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is a pronic number, being equal to 863×864.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088640).

745632 is an abundant number, since it is smaller than the sum of its proper divisors (1431648).

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

745632 is a wasteful number, since it uses less digits than its factorization.

745632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 868 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 745632 is about 863.4998552403. The cubic root of 745632 is about 90.6793042746.

The spelling of 745632 in words is "seven hundred forty-five thousand, six hundred thirty-two".