6467641 has 4 divisors (see below), whose sum is σ = 6485632. Its totient is φ = 6449652.

The previous prime is 6467621. The next prime is 6467653. The reversal of 6467641 is 1467646.

It is a happy number.

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: 1467646 = 2 ⋅733823.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6467641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6467597 and 6467606.

It is not an unprimeable number, because it can be changed into a prime (6467611) 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, 8445 + ... + 9178.

It is an arithmetic number, because the mean of its divisors is an integer number (1621408).

Almost surely, 2^6467641 is an apocalyptic number.

It is an amenable number.

6467641 is a deficient number, since it is larger than the sum of its proper divisors (17991).

6467641 is a wasteful number, since it uses less digits than its factorization.

6467641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17990.

The product of its digits is 24192, while the sum is 34.

The square root of 6467641 is about 2543.1557168211. The cubic root of 6467641 is about 186.3153493488.

The spelling of 6467641 in words is "six million, four hundred sixty-seven thousand, six hundred forty-one".