747680549 has 8 divisors (see below), whose sum is σ = 932173248. Its totient is φ = 582608160.

The previous prime is 747680513. The next prime is 747680579. The reversal of 747680549 is 945086747.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-747680549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747680497 and 747680506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747680579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4854992 + ... + 4855145.

It is an arithmetic number, because the mean of its divisors is an integer number (116521656).

Almost surely, 2^747680549 is an apocalyptic number.

It is an amenable number.

747680549 is a deficient number, since it is larger than the sum of its proper divisors (184492699).

747680549 is a wasteful number, since it uses less digits than its factorization.

747680549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9710155.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 747680549 is about 27343.7478959999. The cubic root of 747680549 is about 907.6227243105.

The spelling of 747680549 in words is "seven hundred forty-seven million, six hundred eighty thousand, five hundred forty-nine".