6745643552 has 18 divisors (see below), whose sum is σ = 13281400503. Its totient is φ = 3372589472.

The previous prime is 6745643551. The next prime is 6745643579. The reversal of 6745643552 is 2553465476.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 3372821776 + 3372821776 = 58076^2 + 58076^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=58076.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6745643497 and 6745643506.

It is not an unprimeable number, because it can be changed into a prime (6745643551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 457349 + ... + 471867.

Almost surely, 2^6745643552 is an apocalyptic number.

It is an amenable number.

6745643552 is a deficient number, since it is larger than the sum of its proper divisors (6535756951).

6745643552 is an frugal number, since it uses more digits than its factorization.

6745643552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29048 (or 14521 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 47.

The square root of 6745643552 is about 82131.8668483799. The cubic root of 6745643552 is about 1889.4749110067.

The spelling of 6745643552 in words is "six billion, seven hundred forty-five million, six hundred forty-three thousand, five hundred fifty-two".