745580779 has 2 divisors, whose sum is σ = 745580780. Its totient is φ = 745580778.

The previous prime is 745580723. The next prime is 745580789. The reversal of 745580779 is 977085547.

745580779 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 is an emirp because it is prime and its reverse (977085547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745580779 - 2¹⁹ = 745056491 is a prime.

It is not a weakly prime, because it can be changed into another prime (745580789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372790389 + 372790390.

It is an arithmetic number, because the mean of its divisors is an integer number (372790390).

Almost surely, 2^745580779 is an apocalyptic number.

745580779 is a deficient number, since it is larger than the sum of its proper divisors (1).

745580779 is an equidigital number, since it uses as much as digits as its factorization.

745580779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2469600, while the sum is 52.

The square root of 745580779 is about 27305.3251033567. The cubic root of 745580779 is about 906.7722782979.

The spelling of 745580779 in words is "seven hundred forty-five million, five hundred eighty thousand, seven hundred seventy-nine".