745836993 has 24 divisors (see below), whose sum is σ = 1215789120. Its totient is φ = 436433760.

The previous prime is 745836983. The next prime is 745837019. The reversal of 745836993 is 399638547.

It is not a de Polignac number, because 745836993 - 2⁶ = 745836929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (745836913) 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 23 ways as a sum of consecutive naturals, for example, 127021 + ... + 132762.

It is an arithmetic number, because the mean of its divisors is an integer number (50657880).

Almost surely, 2^745836993 is an apocalyptic number.

It is an amenable number.

745836993 is a deficient number, since it is larger than the sum of its proper divisors (469952127).

745836993 is a wasteful number, since it uses less digits than its factorization.

745836993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259829 (or 259826 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 745836993 is about 27310.0163493177. The cubic root of 745836993 is about 906.8761352067.

It can be divided in two parts, 745 and 836993, that added together give a palindrome (837738).

The spelling of 745836993 in words is "seven hundred forty-five million, eight hundred thirty-six thousand, nine hundred ninety-three".