6736844641 has 4 divisors (see below), whose sum is σ = 6738481152. Its totient is φ = 6735208132.

The previous prime is 6736844627. The next prime is 6736844651. The reversal of 6736844641 is 1464486376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6736844641 - 2⁹ = 6736844129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6736844651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812065 + ... + 820318.

It is an arithmetic number, because the mean of its divisors is an integer number (1684620288).

Almost surely, 2^6736844641 is an apocalyptic number.

It is an amenable number.

6736844641 is a deficient number, since it is larger than the sum of its proper divisors (1636511).

6736844641 is a wasteful number, since it uses less digits than its factorization.

6736844641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636510.

The product of its digits is 2322432, while the sum is 49.

The square root of 6736844641 is about 82078.2836138768. The cubic root of 6736844641 is about 1888.6530197967.

The spelling of 6736844641 in words is "six billion, seven hundred thirty-six million, eight hundred forty-four thousand, six hundred forty-one".