6647492 has 24 divisors (see below), whose sum is σ = 12512640. Its totient is φ = 3080160.

The previous prime is 6647489. The next prime is 6647497. The reversal of 6647492 is 2947466.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647497) 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, 2642 + ... + 4502.

It is an arithmetic number, because the mean of its divisors is an integer number (521360).

Almost surely, 2^6647492 is an apocalyptic number.

It is an amenable number.

6647492 is a deficient number, since it is larger than the sum of its proper divisors (5865148).

6647492 is a wasteful number, since it uses less digits than its factorization.

6647492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1929 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 6647492 is about 2578.2730654452. The cubic root of 6647492 is about 188.0265919832.

It can be divided in two parts, 66474 and 92, that added together give a palindrome (66566).

The spelling of 6647492 in words is "six million, six hundred forty-seven thousand, four hundred ninety-two".