745735591 has 2 divisors, whose sum is σ = 745735592. Its totient is φ = 745735590.

The previous prime is 745735577. The next prime is 745735607. The reversal of 745735591 is 195537547.

It is a happy number.

745735591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745735591 is a prime.

It is a super-2 number, since 2×745735591² = 1112243143368238562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745735531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372867795 + 372867796.

It is an arithmetic number, because the mean of its divisors is an integer number (372867796).

Almost surely, 2^745735591 is an apocalyptic number.

745735591 is a deficient number, since it is larger than the sum of its proper divisors (1).

745735591 is an equidigital number, since it uses as much as digits as its factorization.

745735591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 661500, while the sum is 46.

The square root of 745735591 is about 27308.1597878729. The cubic root of 745735591 is about 906.8350345272.

The spelling of 745735591 in words is "seven hundred forty-five million, seven hundred thirty-five thousand, five hundred ninety-one".