745720 has 32 divisors (see below), whose sum is σ = 1703520. Its totient is φ = 293760.

The previous prime is 745711. The next prime is 745727. The reversal of 745720 is 27547.

745720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745727) by changing a digit.

745720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4030 + ... + 4210.

It is an arithmetic number, because the mean of its divisors is an integer number (53235).

2⁷⁴⁵⁷²⁰ is an apocalyptic number.

It is an amenable number.

745720 is an abundant number, since it is smaller than the sum of its proper divisors (957800).

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

745720 is a wasteful number, since it uses less digits than its factorization.

745720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 745720 is about 863.5508091595. The cubic root of 745720 is about 90.6828714788.

The spelling of 745720 in words is "seven hundred forty-five thousand, seven hundred twenty".