6555339644 has 24 divisors (see below), whose sum is σ = 13800716160. Its totient is φ = 2661566256.

The previous prime is 6555339643. The next prime is 6555339649. The reversal of 6555339644 is 4469335556.

It is a junction number, because it is equal to n+sod(n) for n = 6555339592 and 6555339601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6555339643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6160502 + ... + 6161565.

It is an arithmetic number, because the mean of its divisors is an integer number (575029840).

Almost surely, 2^6555339644 is an apocalyptic number.

It is an amenable number.

6555339644 is an abundant number, since it is smaller than the sum of its proper divisors (7245376516).

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

6555339644 is a wasteful number, since it uses less digits than its factorization.

6555339644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12322097 (or 12322095 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 50.

The square root of 6555339644 is about 80965.0519915846. The cubic root of 6555339644 is about 1871.5369221141.

The spelling of 6555339644 in words is "six billion, five hundred fifty-five million, three hundred thirty-nine thousand, six hundred forty-four".