6466667 has 4 divisors (see below), whose sum is σ = 6485040. Its totient is φ = 6448296.

The previous prime is 6466661. The next prime is 6466679. The reversal of 6466667 is 7666646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6466667 - 2¹² = 6462571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6466661) 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, 8648 + ... + 9365.

It is an arithmetic number, because the mean of its divisors is an integer number (1621260).

Almost surely, 2^6466667 is an apocalyptic number.

6466667 is a deficient number, since it is larger than the sum of its proper divisors (18373).

6466667 is a wasteful number, since it uses less digits than its factorization.

6466667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18372.

The product of its digits is 217728, while the sum is 41.

The square root of 6466667 is about 2542.9642152417. The cubic root of 6466667 is about 186.3059961054.

The spelling of 6466667 in words is "six million, four hundred sixty-six thousand, six hundred sixty-seven".