6402752747 has 4 divisors (see below), whose sum is σ = 6511274040. Its totient is φ = 6294231456.

The previous prime is 6402752743. The next prime is 6402752771. The reversal of 6402752747 is 7472572046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7472572046 = 2 ⋅3736286023.

It is a cyclic number.

It is not a de Polignac number, because 6402752747 - 2² = 6402752743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6402752698 and 6402752707.

It is not an unprimeable number, because it can be changed into a prime (6402752743) 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 3 ways as a sum of consecutive naturals, for example, 54260558 + ... + 54260675.

It is an arithmetic number, because the mean of its divisors is an integer number (1627818510).

Almost surely, 2^6402752747 is an apocalyptic number.

6402752747 is a deficient number, since it is larger than the sum of its proper divisors (108521293).

6402752747 is a wasteful number, since it uses less digits than its factorization.

6402752747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108521292.

The product of its (nonzero) digits is 658560, while the sum is 44.

The square root of 6402752747 is about 80017.2028191438. The cubic root of 6402752747 is about 1856.9016852845.

The spelling of 6402752747 in words is "six billion, four hundred two million, seven hundred fifty-two thousand, seven hundred forty-seven".