745409691 has 96 divisors (see below), whose sum is σ = 1299916800. Its totient is φ = 407151360.

The previous prime is 745409681. The next prime is 745409699. The reversal of 745409691 is 196904547.

745409691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 745409691 - 2⁶ = 745409627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745409699) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3118750 + ... + 3118988.

It is an arithmetic number, because the mean of its divisors is an integer number (13540800).

Almost surely, 2^745409691 is an apocalyptic number.

745409691 is a deficient number, since it is larger than the sum of its proper divisors (554507109).

745409691 is a wasteful number, since it uses less digits than its factorization.

745409691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 745409691 is about 27302.1920548516. The cubic root of 745409691 is about 906.7029141512.

The spelling of 745409691 in words is "seven hundred forty-five million, four hundred nine thousand, six hundred ninety-one".