6467661 has 8 divisors (see below), whose sum is σ = 9581760. Its totient is φ = 4311756.

The previous prime is 6467653. The next prime is 6467663. The reversal of 6467661 is 1667646.

6467661 is a `hidden beast` number, since 646 + 7 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 6467661 - 2³ = 6467653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6467663) 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, 119745 + ... + 119798.

It is an arithmetic number, because the mean of its divisors is an integer number (1197720).

Almost surely, 2^6467661 is an apocalyptic number.

It is an amenable number.

6467661 is a deficient number, since it is larger than the sum of its proper divisors (3114099).

6467661 is a wasteful number, since it uses less digits than its factorization.

6467661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239552 (or 239546 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 6467661 is about 2543.1596489407. The cubic root of 6467661 is about 186.3155413973.

The spelling of 6467661 in words is "six million, four hundred sixty-seven thousand, six hundred sixty-one".