745530 has 16 divisors (see below), whose sum is σ = 1789344. Its totient is φ = 198800.

The previous prime is 745529. The next prime is 745531. The reversal of 745530 is 35547.

It is an interprime number because it is at equal distance from previous prime (745529) and next prime (745531).

It is a self number, because there is not a number n which added to its sum of digits gives 745530.

It is not an unprimeable number, because it can be changed into a prime (745531) 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, 12396 + ... + 12455.

It is an arithmetic number, because the mean of its divisors is an integer number (111834).

2⁷⁴⁵⁵³⁰ is an apocalyptic number.

745530 is an abundant number, since it is smaller than the sum of its proper divisors (1043814).

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

745530 is a wasteful number, since it uses less digits than its factorization.

745530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24861.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 745530 is about 863.4407912532. The cubic root of 745530 is about 90.6751692094.

It can be divided in two parts, 745 and 530, that added together give a triangular number (1275 = T₅₀).

The spelling of 745530 in words is "seven hundred forty-five thousand, five hundred thirty".