745645727 has 2 divisors, whose sum is σ = 745645728. Its totient is φ = 745645726.

The previous prime is 745645679. The next prime is 745645729. The reversal of 745645727 is 727546547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 745645727 - 2¹⁴ = 745629343 is a prime.

Together with 745645729, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745645729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372822863 + 372822864.

It is an arithmetic number, because the mean of its divisors is an integer number (372822864).

Almost surely, 2^745645727 is an apocalyptic number.

745645727 is a deficient number, since it is larger than the sum of its proper divisors (1).

745645727 is an equidigital number, since it uses as much as digits as its factorization.

745645727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1646400, while the sum is 47.

The square root of 745645727 is about 27306.5143692856. The cubic root of 745645727 is about 906.7986073636.

The spelling of 745645727 in words is "seven hundred forty-five million, six hundred forty-five thousand, seven hundred twenty-seven".