745770755 has 4 divisors (see below), whose sum is σ = 894924912. Its totient is φ = 596616600.

The previous prime is 745770749. The next prime is 745770793. The reversal of 745770755 is 557077547.

745770755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557077547 = 13 ⋅42852119.

It is not a de Polignac number, because 745770755 - 2¹⁸ = 745508611 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74577071 + ... + 74577080.

It is an arithmetic number, because the mean of its divisors is an integer number (223731228).

Almost surely, 2^745770755 is an apocalyptic number.

745770755 is a deficient number, since it is larger than the sum of its proper divisors (149154157).

745770755 is a wasteful number, since it uses less digits than its factorization.

745770755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149154156.

The product of its (nonzero) digits is 1200500, while the sum is 47.

The square root of 745770755 is about 27308.8036171488. The cubic root of 745770755 is about 906.8492877676.

It can be divided in two parts, 745 and 770755, that multiplied together give a palindrome (574212475).

The spelling of 745770755 in words is "seven hundred forty-five million, seven hundred seventy thousand, seven hundred fifty-five".