6600681 has 6 divisors (see below), whose sum is σ = 9534330. Its totient is φ = 4400448.

The previous prime is 6600679. The next prime is 6600691. The reversal of 6600681 is 1860066.

It can be written as a sum of positive squares in only one way, i.e., 6051600 + 549081 = 2460^2 + 741^2 .

It is not a de Polignac number, because 6600681 - 2¹ = 6600679 is a prime.

It is a super-2 number, since 2×6600681² = 87137979327522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6600611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 366696 + ... + 366713.

It is an arithmetic number, because the mean of its divisors is an integer number (1589055).

Almost surely, 2^6600681 is an apocalyptic number.

It is an amenable number.

6600681 is a deficient number, since it is larger than the sum of its proper divisors (2933649).

6600681 is a wasteful number, since it uses less digits than its factorization.

6600681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733415 (or 733412 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 6600681 is about 2569.1790517595. The cubic root of 6600681 is about 187.5841968524.

The spelling of 6600681 in words is "six million, six hundred thousand, six hundred eighty-one".