745356993 has 16 divisors (see below), whose sum is σ = 1052911296. Its totient is φ = 467389440.

The previous prime is 745356979. The next prime is 745357001. The reversal of 745356993 is 399653547.

It is a happy number.

It is not a de Polignac number, because 745356993 - 2⁵ = 745356961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (745356593) 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, 106830 + ... + 113592.

It is an arithmetic number, because the mean of its divisors is an integer number (65806956).

Almost surely, 2^745356993 is an apocalyptic number.

It is an amenable number.

745356993 is a deficient number, since it is larger than the sum of its proper divisors (307554303).

745356993 is a wasteful number, since it uses less digits than its factorization.

745356993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944.

The product of its digits is 3061800, while the sum is 51.

The square root of 745356993 is about 27301.2269504504. The cubic root of 745356993 is about 906.6815466819.

It can be divided in two parts, 7453 and 56993, that added together give a palindrome (64446).

The spelling of 745356993 in words is "seven hundred forty-five million, three hundred fifty-six thousand, nine hundred ninety-three".