6466660 has 12 divisors (see below), whose sum is σ = 13580028. Its totient is φ = 2586656.

The previous prime is 6466633. The next prime is 6466661. The reversal of 6466660 is 666646.

It can be written as a sum of positive squares in 2 ways, for example, as 1340964 + 5125696 = 1158^2 + 2264^2 .

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, 161647 + ... + 161686.

It is an arithmetic number, because the mean of its divisors is an integer number (1131669).

Almost surely, 2^6466660 is an apocalyptic number.

It is an amenable number.

6466660 is an abundant number, since it is smaller than the sum of its proper divisors (7113368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6466660 is a wasteful number, since it uses less digits than its factorization.

6466660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323342 (or 323340 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 6466660 is about 2542.9628388948. The cubic root of 6466660 is about 186.3059288816.

The spelling of 6466660 in words is "six million, four hundred sixty-six thousand, six hundred sixty".