6466691 has 8 divisors (see below), whose sum is σ = 8062464. Its totient is φ = 5038920.

The previous prime is 6466679. The next prime is 6466709. The reversal of 6466691 is 1966646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6466691 - 2⁶ = 6466627 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

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 7 ways as a sum of consecutive naturals, for example, 41915 + ... + 42068.

It is an arithmetic number, because the mean of its divisors is an integer number (1007808).

Almost surely, 2^6466691 is an apocalyptic number.

6466691 is a deficient number, since it is larger than the sum of its proper divisors (1595773).

6466691 is a wasteful number, since it uses less digits than its factorization.

6466691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84001.

The product of its digits is 46656, while the sum is 38.

The square root of 6466691 is about 2542.9689341398. The cubic root of 6466691 is about 186.3062265868.

It can be divided in two parts, 646 and 6691, that added together give a palindrome (7337).

The spelling of 6466691 in words is "six million, four hundred sixty-six thousand, six hundred ninety-one".