6677110021 has 8 divisors (see below), whose sum is σ = 6858772760. Its totient is φ = 6495510528.

The previous prime is 6677110001. The next prime is 6677110039. The reversal of 6677110021 is 1200117766.

It can be written as a sum of positive squares in 4 ways, for example, as 3304985121 + 3372124900 = 57489^2 + 58070^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6677110021 - 2⁷ = 6677109893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6677110001) 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, 265045 + ... + 289141.

It is an arithmetic number, because the mean of its divisors is an integer number (857346595).

Almost surely, 2^6677110021 is an apocalyptic number.

It is an amenable number.

6677110021 is a deficient number, since it is larger than the sum of its proper divisors (181662739).

6677110021 is a wasteful number, since it uses less digits than its factorization.

6677110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31623.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 6677110021 is about 81713.5852903298. The cubic root of 6677110021 is about 1883.0543023131.

Adding to 6677110021 its reverse (1200117766), we get a palindrome (7877227787).

The spelling of 6677110021 in words is "six billion, six hundred seventy-seven million, one hundred ten thousand, twenty-one".