745333247 has 2 divisors, whose sum is σ = 745333248. Its totient is φ = 745333246.

The previous prime is 745333243. The next prime is 745333249. The reversal of 745333247 is 742333547.

It is a strong prime.

It is an emirp because it is prime and its reverse (742333547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745333247 - 2² = 745333243 is a prime.

Together with 745333249, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 745333247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745333241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372666623 + 372666624.

It is an arithmetic number, because the mean of its divisors is an integer number (372666624).

Almost surely, 2^745333247 is an apocalyptic number.

745333247 is a deficient number, since it is larger than the sum of its proper divisors (1).

745333247 is an equidigital number, since it uses as much as digits as its factorization.

745333247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 38.

The square root of 745333247 is about 27300.7920581070. The cubic root of 745333247 is about 906.6719180570.

The spelling of 745333247 in words is "seven hundred forty-five million, three hundred thirty-three thousand, two hundred forty-seven".