745772823 has 12 divisors (see below), whose sum is σ = 1079482560. Its totient is φ = 496141056.

The previous prime is 745772809. The next prime is 745772831. The reversal of 745772823 is 328277547.

745772823 is a `hidden beast` number, since 74 + 577 + 2 + 8 + 2 + 3 = 666.

It is not a de Polignac number, because 745772823 - 2⁵ = 745772791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745772873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82186 + ... + 90807.

It is an arithmetic number, because the mean of its divisors is an integer number (89956880).

Almost surely, 2^745772823 is an apocalyptic number.

745772823 is a deficient number, since it is larger than the sum of its proper divisors (333709737).

745772823 is a wasteful number, since it uses less digits than its factorization.

745772823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173478 (or 173475 counting only the distinct ones).

The product of its digits is 658560, while the sum is 45.

The square root of 745772823 is about 27308.8414803704. The cubic root of 745772823 is about 906.8501259888.

The spelling of 745772823 in words is "seven hundred forty-five million, seven hundred seventy-two thousand, eight hundred twenty-three".