6640301 has 4 divisors (see below), whose sum is σ = 6781632. Its totient is φ = 6498972.

The previous prime is 6640297. The next prime is 6640321. The reversal of 6640301 is 1030466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1030466 = 2 ⋅515233.

It is not a de Polignac number, because 6640301 - 2² = 6640297 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 (6640321) 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, 70595 + ... + 70688.

It is an arithmetic number, because the mean of its divisors is an integer number (1695408).

Almost surely, 2^6640301 is an apocalyptic number.

It is an amenable number.

6640301 is a deficient number, since it is larger than the sum of its proper divisors (141331).

6640301 is a wasteful number, since it uses less digits than its factorization.

6640301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141330.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 6640301 is about 2576.8781500102. The cubic root of 6640301 is about 187.9587675532.

Adding to 6640301 its reverse (1030466), we get a palindrome (7670767).

The spelling of 6640301 in words is "six million, six hundred forty thousand, three hundred one".