6467638 has 16 divisors (see below), whose sum is σ = 10566000. Its totient is φ = 2957472.

The previous prime is 6467621. The next prime is 6467653. The reversal of 6467638 is 8367646.

It is a self number, because there is not a number n which added to its sum of digits gives 6467638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1833 + ... + 4036.

It is an arithmetic number, because the mean of its divisors is an integer number (660375).

Almost surely, 2^6467638 is an apocalyptic number.

6467638 is a deficient number, since it is larger than the sum of its proper divisors (4098362).

6467638 is a wasteful number, since it uses less digits than its factorization.

6467638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919.

The product of its digits is 145152, while the sum is 40.

The square root of 6467638 is about 2543.1551270027. The cubic root of 6467638 is about 186.3153205415.

The spelling of 6467638 in words is "six million, four hundred sixty-seven thousand, six hundred thirty-eight".