6737722641 has 20 divisors (see below), whose sum is σ = 10839225012. Its totient is φ = 4146290208.

The previous prime is 6737722637. The next prime is 6737722643. The reversal of 6737722641 is 1462277376.

It can be written as a sum of positive squares in 2 ways, for example, as 1082081025 + 5655641616 = 32895^2 + 75204^2 .

It is not a de Polignac number, because 6737722641 - 2² = 6737722637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6737722643) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3198246 + ... + 3200351.

Almost surely, 2^6737722641 is an apocalyptic number.

It is an amenable number.

6737722641 is a deficient number, since it is larger than the sum of its proper divisors (4101502371).

6737722641 is a wasteful number, since it uses less digits than its factorization.

6737722641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398622 (or 6398613 counting only the distinct ones).

The product of its digits is 592704, while the sum is 45.

The square root of 6737722641 is about 82083.6319920117. The cubic root of 6737722641 is about 1888.7350644040.

The spelling of 6737722641 in words is "six billion, seven hundred thirty-seven million, seven hundred twenty-two thousand, six hundred forty-one".