6906565644 has 96 divisors (see below), whose sum is σ = 18226736640. Its totient is φ = 2016268800.

The previous prime is 6906565643. The next prime is 6906565651. The reversal of 6906565644 is 4465656096.

It is a super-2 number, since 2×6906565644² = 95401297989762269472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6906565643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1992657 + ... + 1996119.

It is an arithmetic number, because the mean of its divisors is an integer number (189861840).

Almost surely, 2^6906565644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6906565644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9113368320).

6906565644 is an abundant number, since it is smaller than the sum of its proper divisors (11320170996).

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

6906565644 is a wasteful number, since it uses less digits than its factorization.

6906565644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031 (or 4029 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 51.

The square root of 6906565644 is about 83105.7497649832. The cubic root of 6906565644 is about 1904.3819125819.

The spelling of 6906565644 in words is "six billion, nine hundred six million, five hundred sixty-five thousand, six hundred forty-four".