6827766645 has 16 divisors (see below), whose sum is σ = 12485059200. Its totient is φ = 3121264704.

The previous prime is 6827766643. The next prime is 6827766677. The reversal of 6827766645 is 5466677286.

It is not a de Polignac number, because 6827766645 - 2¹ = 6827766643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6827766643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32513070 + ... + 32513279.

It is an arithmetic number, because the mean of its divisors is an integer number (780316200).

Almost surely, 2^6827766645 is an apocalyptic number.

It is an amenable number.

6827766645 is a deficient number, since it is larger than the sum of its proper divisors (5657292555).

6827766645 is a wasteful number, since it uses less digits than its factorization.

6827766645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65026364.

The product of its digits is 20321280, while the sum is 57.

The square root of 6827766645 is about 82630.3010099806. The cubic root of 6827766645 is about 1897.1116450886. Note that the first 3 decimals are identical.

The spelling of 6827766645 in words is "six billion, eight hundred twenty-seven million, seven hundred sixty-six thousand, six hundred forty-five".