6641377 has 12 divisors (see below), whose sum is σ = 7055100. Its totient is φ = 6249152.

The previous prime is 6641359. The next prime is 6641381. The reversal of 6641377 is 7731466.

It can be written as a sum of positive squares in 6 ways, for example, as 41616 + 6599761 = 204^2 + 2569^2 .

It is not a de Polignac number, because 6641377 - 2⁷ = 6641249 is a prime.

It is a super-3 number, since 3×6641377³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6641357) 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, 44499 + ... + 44647.

It is an arithmetic number, because the mean of its divisors is an integer number (587925).

Almost surely, 2^6641377 is an apocalyptic number.

It is an amenable number.

6641377 is a deficient number, since it is larger than the sum of its proper divisors (413723).

6641377 is a wasteful number, since it uses less digits than its factorization.

6641377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 231 counting only the distinct ones).

The product of its digits is 21168, while the sum is 34.

The square root of 6641377 is about 2577.0869213125. The cubic root of 6641377 is about 187.9689193376.

The spelling of 6641377 in words is "six million, six hundred forty-one thousand, three hundred seventy-seven".