745565089 has 16 divisors (see below), whose sum is σ = 806065920. Its totient is φ = 688101120.

The previous prime is 745565083. The next prime is 745565099. The reversal of 745565089 is 980565547.

It is a cyclic number.

It is not a de Polignac number, because 745565089 - 2³ = 745565081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745565081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52249 + ... + 64969.

It is an arithmetic number, because the mean of its divisors is an integer number (50379120).

Almost surely, 2^745565089 is an apocalyptic number.

It is an amenable number.

745565089 is a deficient number, since it is larger than the sum of its proper divisors (60500831).

745565089 is a wasteful number, since it uses less digits than its factorization.

745565089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12840.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The square root of 745565089 is about 27305.0377952494. The cubic root of 745565089 is about 906.7659175488.

The spelling of 745565089 in words is "seven hundred forty-five million, five hundred sixty-five thousand, eighty-nine".