6469638 has 32 divisors (see below), whose sum is σ = 15267840. Its totient is φ = 1788480.

The previous prime is 6469637. The next prime is 6469649. The reversal of 6469638 is 8369646.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 6469638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6469637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1183 + ... + 3786.

It is an arithmetic number, because the mean of its divisors is an integer number (477120).

Almost surely, 2^6469638 is an apocalyptic number.

6469638 is an abundant number, since it is smaller than the sum of its proper divisors (8798202).

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

6469638 is a wasteful number, since it uses less digits than its factorization.

6469638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012.

The product of its digits is 186624, while the sum is 42.

The square root of 6469638 is about 2543.5483089574. The cubic root of 6469638 is about 186.3345234425.

The spelling of 6469638 in words is "six million, four hundred sixty-nine thousand, six hundred thirty-eight".