745060722561 has 27 divisors (see below), whose sum is σ = 1086754902051. Its totient is φ = 491882033664.

The previous prime is 745060722533. The next prime is 745060722611. The reversal of 745060722561 is 165227060547.

The square root of 745060722561 is 863169.

It is a perfect power (a square), and thus also a powerful number.

745060722561 is a `hidden beast` number, since 7 + 4 + 5 + 0 + 60 + 7 + 22 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26906168961 + 718154553600 = 164031^2 + 847440^2 .

It is not a de Polignac number, because 745060722561 - 2⁵ = 745060722529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745060720561) 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 in 26 ways as a sum of consecutive naturals, for example, 277075905 + ... + 277078593.

Almost surely, 2^745060722561 is an apocalyptic number.

745060722561 is the 863169-th square number.

745060722561 is the 431585-th centered octagonal number.

It is an amenable number.

745060722561 is a deficient number, since it is larger than the sum of its proper divisors (341694179490).

745060722561 is an frugal number, since it uses more digits than its factorization.

745060722561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5598 (or 2799 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 745060722561 in words is "seven hundred forty-five billion, sixty million, seven hundred twenty-two thousand, five hundred sixty-one".