745884 has 18 divisors (see below), whose sum is σ = 1885520. Its totient is φ = 248616.

The previous prime is 745873. The next prime is 745903. The reversal of 745884 is 488547.

745884 is a `hidden beast` number, since 74 + 588 + 4 = 666.

745884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 20719 = 745884 / (7 + 4 + 5 + 8 + 8 + 4).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

745884 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 5 ways as a sum of consecutive naturals, for example, 10324 + ... + 10395.

2⁷⁴⁵⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

745884 is an abundant number, since it is smaller than the sum of its proper divisors (1139636).

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

745884 is a wasteful number, since it uses less digits than its factorization.

745884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20729 (or 20724 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 745884 is about 863.6457607144. The cubic root of 745884 is about 90.6895187015.

The spelling of 745884 in words is "seven hundred forty-five thousand, eight hundred eighty-four".