749366865 has 24 divisors (see below), whose sum is σ = 1398819240. Its totient is φ = 368918784.

The previous prime is 749366857. The next prime is 749366869. The reversal of 749366865 is 568663947.

749366865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 100340289 + 649026576 = 10017^2 + 25476^2 .

It is not a de Polignac number, because 749366865 - 2³ = 749366857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (749366869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 639900 + ... + 641069.

It is an arithmetic number, because the mean of its divisors is an integer number (58284135).

Almost surely, 2^749366865 is an apocalyptic number.

It is an amenable number.

749366865 is a deficient number, since it is larger than the sum of its proper divisors (649452375).

749366865 is a wasteful number, since it uses less digits than its factorization.

749366865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280993 (or 1280990 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 749366865 is about 27374.5660239573. The cubic root of 749366865 is about 908.3045616302.

Subtracting from 749366865 its product of digits (6531840), we obtain a square (742835025 = 27255²).

The spelling of 749366865 in words is "seven hundred forty-nine million, three hundred sixty-six thousand, eight hundred sixty-five".