745023743 has 4 divisors (see below), whose sum is σ = 760875360. Its totient is φ = 729172128.

The previous prime is 745023733. The next prime is 745023757. The reversal of 745023743 is 347320547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347320547 = 7 ⋅49617221.

It is a cyclic number.

It is not a de Polignac number, because 745023743 - 2¹² = 745019647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745023733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7925738 + ... + 7925831.

It is an arithmetic number, because the mean of its divisors is an integer number (190218840).

Almost surely, 2^745023743 is an apocalyptic number.

745023743 is a deficient number, since it is larger than the sum of its proper divisors (15851617).

745023743 is a wasteful number, since it uses less digits than its factorization.

745023743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15851616.

The product of its (nonzero) digits is 70560, while the sum is 35.

The square root of 745023743 is about 27295.1230625546. The cubic root of 745023743 is about 906.5464004051.

The spelling of 745023743 in words is "seven hundred forty-five million, twenty-three thousand, seven hundred forty-three".