749659761 has 12 divisors (see below), whose sum is σ = 1146538692. Its totient is φ = 470374656.

The previous prime is 749659759. The next prime is 749659783. The reversal of 749659761 is 167956947.

749659761 is a `hidden beast` number, since 7 + 49 + 6 + 597 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 420455025 + 329204736 = 20505^2 + 18144^2 .

It is not a de Polignac number, because 749659761 - 2¹ = 749659759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 749659698 and 749659707.

It is not an unprimeable number, because it can be changed into a prime (749659711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2449716 + ... + 2450021.

It is an arithmetic number, because the mean of its divisors is an integer number (95544891).

Almost surely, 2^749659761 is an apocalyptic number.

It is an amenable number.

749659761 is a deficient number, since it is larger than the sum of its proper divisors (396878931).

749659761 is a wasteful number, since it uses less digits than its factorization.

749659761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899760 (or 4899757 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 749659761 is about 27379.9152847484. The cubic root of 749659761 is about 908.4228855699.

The spelling of 749659761 in words is "seven hundred forty-nine million, six hundred fifty-nine thousand, seven hundred sixty-one".