6461668 has 12 divisors (see below), whose sum is σ = 11463340. Its totient is φ = 3186432.

The previous prime is 6461657. The next prime is 6461713. The reversal of 6461668 is 8661646.

It can be written as a sum of positive squares in 2 ways, for example, as 5189284 + 1272384 = 2278^2 + 1128^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10773 + ... + 11356.

Almost surely, 2^6461668 is an apocalyptic number.

It is an amenable number.

6461668 is a deficient number, since it is larger than the sum of its proper divisors (5001672).

6461668 is a wasteful number, since it uses less digits than its factorization.

6461668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22206 (or 22204 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 6461668 is about 2541.9811171604. The cubic root of 6461668 is about 186.2579763261.

The spelling of 6461668 in words is "six million, four hundred sixty-one thousand, six hundred sixty-eight".