749239685 has 8 divisors (see below), whose sum is σ = 899247096. Its totient is φ = 599285440.

The previous prime is 749239669. The next prime is 749239717. The reversal of 749239685 is 586932947.

It is a happy number.

749239685 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 55338721 + 693900964 = 7439^2 + 26342^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 749239685 - 2⁴ = 749239669 is a prime.

It is a super-2 number, since 2×749239685² = 1122720211157798450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31355 + ... + 49815.

It is an arithmetic number, because the mean of its divisors is an integer number (112405887).

Almost surely, 2^749239685 is an apocalyptic number.

It is an amenable number.

749239685 is a deficient number, since it is larger than the sum of its proper divisors (150007411).

749239685 is a wasteful number, since it uses less digits than its factorization.

749239685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26583.

The product of its digits is 3265920, while the sum is 53.

The square root of 749239685 is about 27372.2429661875. The cubic root of 749239685 is about 908.2531739342.

The spelling of 749239685 in words is "seven hundred forty-nine million, two hundred thirty-nine thousand, six hundred eighty-five".