745549069 has 2 divisors, whose sum is σ = 745549070. Its totient is φ = 745549068.

The previous prime is 745549019. The next prime is 745549087. The reversal of 745549069 is 960945547.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724955625 + 20593444 = 26925^2 + 4538^2 .

It is a cyclic number.

It is not a de Polignac number, because 745549069 - 2⁷ = 745548941 is a prime.

It is a super-2 number, since 2×745549069² = 1111686828573533522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745549019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372774534 + 372774535.

It is an arithmetic number, because the mean of its divisors is an integer number (372774535).

Almost surely, 2^745549069 is an apocalyptic number.

It is an amenable number.

745549069 is a deficient number, since it is larger than the sum of its proper divisors (1).

745549069 is an equidigital number, since it uses as much as digits as its factorization.

745549069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 745549069 is about 27304.7444412139. The cubic root of 745549069 is about 906.7594229251.

The spelling of 745549069 in words is "seven hundred forty-five million, five hundred forty-nine thousand, sixty-nine".