6641395 has 4 divisors (see below), whose sum is σ = 7969680. Its totient is φ = 5313112.

The previous prime is 6641387. The next prime is 6641399. The reversal of 6641395 is 5931466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5931466 = 2 ⋅2965733.

It is a cyclic number.

It is not a de Polignac number, because 6641395 - 2³ = 6641387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6641395.

It is not an unprimeable number, because it can be changed into a prime (6641399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664135 + ... + 664144.

It is an arithmetic number, because the mean of its divisors is an integer number (1992420).

Almost surely, 2^6641395 is an apocalyptic number.

6641395 is a deficient number, since it is larger than the sum of its proper divisors (1328285).

6641395 is a wasteful number, since it uses less digits than its factorization.

6641395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328284.

The product of its digits is 19440, while the sum is 34.

The square root of 6641395 is about 2577.0904136254. The cubic root of 6641395 is about 187.9690891536.

It can be divided in two parts, 6641 and 395, that multiplied together give a triangular number (2623195 = T₂₂₉₀).

The spelling of 6641395 in words is "six million, six hundred forty-one thousand, three hundred ninety-five".