745857633 has 4 divisors (see below), whose sum is σ = 994476848. Its totient is φ = 497238420.

The previous prime is 745857631. The next prime is 745857659. The reversal of 745857633 is 336758547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336758547 = 3 ⋅112252849.

It is not a de Polignac number, because 745857633 - 2¹ = 745857631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745857631) 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, 124309603 + ... + 124309608.

It is an arithmetic number, because the mean of its divisors is an integer number (248619212).

Almost surely, 2^745857633 is an apocalyptic number.

It is an amenable number.

745857633 is a deficient number, since it is larger than the sum of its proper divisors (248619215).

745857633 is a wasteful number, since it uses less digits than its factorization.

745857633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248619214.

The product of its digits is 2116800, while the sum is 48.

The square root of 745857633 is about 27310.3942300363. The cubic root of 745857633 is about 906.8845006409.

The spelling of 745857633 in words is "seven hundred forty-five million, eight hundred fifty-seven thousand, six hundred thirty-three".