745666564 has 12 divisors (see below), whose sum is σ = 1319579100. Its totient is φ = 368643968.

The previous prime is 745666561. The next prime is 745666567. The reversal of 745666564 is 465666547.

It is an interprime number because it is at equal distance from previous prime (745666561) and next prime (745666567).

It can be written as a sum of positive squares in 2 ways, for example, as 444366400 + 301300164 = 21080^2 + 17358^2 .

It is not an unprimeable number, because it can be changed into a prime (745666561) 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 in 3 ways as a sum of consecutive naturals, for example, 1046929 + ... + 1047640.

It is an arithmetic number, because the mean of its divisors is an integer number (109964925).

Almost surely, 2^745666564 is an apocalyptic number.

It is an amenable number.

745666564 is a deficient number, since it is larger than the sum of its proper divisors (573912536).

745666564 is a wasteful number, since it uses less digits than its factorization.

745666564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094662 (or 2094660 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 49.

The square root of 745666564 is about 27306.8959056133. The cubic root of 745666564 is about 906.8070540856.

The spelling of 745666564 in words is "seven hundred forty-five million, six hundred sixty-six thousand, five hundred sixty-four".