6744739720 has 32 divisors (see below), whose sum is σ = 15462002520. Its totient is φ = 2646991360.

The previous prime is 6744739717. The next prime is 6744739733. The reversal of 6744739720 is 279374476.

It can be written as a sum of positive squares in 4 ways, for example, as 5752615716 + 992124004 = 75846^2 + 31498^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588621 + ... + 1592860.

Almost surely, 2^6744739720 is an apocalyptic number.

It is an amenable number.

6744739720 is an abundant number, since it is smaller than the sum of its proper divisors (8717262800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6744739720 is a wasteful number, since it uses less digits than its factorization.

6744739720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181545 (or 3181541 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 49.

The square root of 6744739720 is about 82126.3643417873. The cubic root of 6744739720 is about 1889.3905185563.

The spelling of 6744739720 in words is "six billion, seven hundred forty-four million, seven hundred thirty-nine thousand, seven hundred twenty".