745817 has 2 divisors, whose sum is σ = 745818. Its totient is φ = 745816.

The previous prime is 745757. The next prime is 745837. The reversal of 745817 is 718547.

745817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 602176 + 143641 = 776^2 + 379^2 .

It is an emirp because it is prime and its reverse (718547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745817 - 2⁶ = 745753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (745837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372908 + 372909.

It is an arithmetic number, because the mean of its divisors is an integer number (372909).

2⁷⁴⁵⁸¹⁷ is an apocalyptic number.

It is an amenable number.

745817 is a deficient number, since it is larger than the sum of its proper divisors (1).

745817 is an equidigital number, since it uses as much as digits as its factorization.

745817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 32.

The square root of 745817 is about 863.6069707917. The cubic root of 745817 is about 90.6868031856.

The spelling of 745817 in words is "seven hundred forty-five thousand, eight hundred seventeen".