6744561739 has 16 divisors (see below), whose sum is σ = 6988623840. Its totient is φ = 6504825600.

The previous prime is 6744561737. The next prime is 6744561743. The reversal of 6744561739 is 9371654476.

It is a cyclic number.

It is not a de Polignac number, because 6744561739 - 2¹ = 6744561737 is a prime.

It is a super-2 number, since 2×6744561739² = 90978226102365408242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6744561737) 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 15 ways as a sum of consecutive naturals, for example, 1774389 + ... + 1778185.

It is an arithmetic number, because the mean of its divisors is an integer number (436788990).

Almost surely, 2^6744561739 is an apocalyptic number.

6744561739 is a deficient number, since it is larger than the sum of its proper divisors (244062101).

6744561739 is a wasteful number, since it uses less digits than its factorization.

6744561739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350.

The product of its digits is 3810240, while the sum is 52.

The square root of 6744561739 is about 82125.2807544668. The cubic root of 6744561739 is about 1889.3738992556.

The spelling of 6744561739 in words is "six billion, seven hundred forty-four million, five hundred sixty-one thousand, seven hundred thirty-nine".