745216 has 36 divisors (see below), whose sum is σ = 1545264. Its totient is φ = 358400.

The previous prime is 745201. The next prime is 745231. The reversal of 745216 is 612547.

It is an interprime number because it is at equal distance from previous prime (745201) and next prime (745231).

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

It is a congruent number.

It is an unprimeable number.

745216 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 3 ways as a sum of consecutive naturals, for example, 10461 + ... + 10531.

It is an arithmetic number, because the mean of its divisors is an integer number (42924).

2⁷⁴⁵²¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (772632).

745216 is an abundant number, since it is smaller than the sum of its proper divisors (800048).

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

745216 is an equidigital number, since it uses as much as digits as its factorization.

745216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 114 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 745216 is about 863.2589414538. The cubic root of 745216 is about 90.6624373267.

It can be divided in two parts, 745 and 216, that added together give a square (961 = 31²).

The spelling of 745216 in words is "seven hundred forty-five thousand, two hundred sixteen".