6616036644 has 36 divisors (see below), whose sum is σ = 17957815344. Its totient is φ = 1890296016.

The previous prime is 6616036643. The next prime is 6616036649. The reversal of 6616036644 is 4466306166.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 6616036596 and 6616036605.

It is not an unprimeable number, because it can be changed into a prime (6616036643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5625294 + ... + 5626469.

It is an arithmetic number, because the mean of its divisors is an integer number (498828204).

Almost surely, 2^6616036644 is an apocalyptic number.

It is an amenable number.

6616036644 is an abundant number, since it is smaller than the sum of its proper divisors (11341778700).

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

6616036644 is a wasteful number, since it uses less digits than its factorization.

6616036644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11251784 (or 11251775 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 6616036644 is about 81339.0228856974. The cubic root of 6616036644 is about 1877.2954778123.

The spelling of 6616036644 in words is "six billion, six hundred sixteen million, thirty-six thousand, six hundred forty-four".