745445023 has 2 divisors, whose sum is σ = 745445024. Its totient is φ = 745445022.

The previous prime is 745445017. The next prime is 745445039. The reversal of 745445023 is 320544547.

It is a weak prime.

It is an emirp because it is prime and its reverse (320544547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745445023 - 2⁵ = 745444991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 745445023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745445123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372722511 + 372722512.

It is an arithmetic number, because the mean of its divisors is an integer number (372722512).

Almost surely, 2^745445023 is an apocalyptic number.

745445023 is a deficient number, since it is larger than the sum of its proper divisors (1).

745445023 is an equidigital number, since it uses as much as digits as its factorization.

745445023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 745445023 is about 27302.8391014561. The cubic root of 745445023 is about 906.7172396609.

The spelling of 745445023 in words is "seven hundred forty-five million, four hundred forty-five thousand, twenty-three".