745724 has 12 divisors (see below), whose sum is σ = 1491504. Its totient is φ = 319584.

The previous prime is 745711. The next prime is 745727. The reversal of 745724 is 427547.

745724 is an admirable number.

It is a super-2 number, since 2×745724² = 1112208568352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct 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.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13289 + ... + 13344.

It is an arithmetic number, because the mean of its divisors is an integer number (124292).

2⁷⁴⁵⁷²⁴ is an apocalyptic number.

It is an amenable number.

745724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

745724 is a wasteful number, since it uses less digits than its factorization.

745724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26644 (or 26642 counting only the distinct ones).

The product of its digits is 7840, while the sum is 29.

The square root of 745724 is about 863.5531251753. The cubic root of 745724 is about 90.6830336178.

The spelling of 745724 in words is "seven hundred forty-five thousand, seven hundred twenty-four".