745499689 has 16 divisors (see below), whose sum is σ = 825888960. Its totient is φ = 667279360.

The previous prime is 745499669. The next prime is 745499707. The reversal of 745499689 is 986994547.

It is not a de Polignac number, because 745499689 - 2⁹ = 745499177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745499639) 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, 250122 + ... + 253084.

It is an arithmetic number, because the mean of its divisors is an integer number (51618060).

Almost surely, 2^745499689 is an apocalyptic number.

It is an amenable number.

745499689 is a deficient number, since it is larger than the sum of its proper divisors (80389271).

745499689 is a wasteful number, since it uses less digits than its factorization.

745499689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320.

The product of its digits is 19595520, while the sum is 61.

The square root of 745499689 is about 27303.8401877831. The cubic root of 745499689 is about 906.7394033311.

The spelling of 745499689 in words is "seven hundred forty-five million, four hundred ninety-nine thousand, six hundred eighty-nine".