6550638 has 16 divisors (see below), whose sum is σ = 13135440. Its totient is φ = 2177856.

The previous prime is 6550631. The next prime is 6550639. The reversal of 6550638 is 8360556.

It is a junction number, because it is equal to n+sod(n) for n = 6550599 and 6550608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550631) 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, 1548 + ... + 3936.

It is an arithmetic number, because the mean of its divisors is an integer number (820965).

Almost surely, 2^6550638 is an apocalyptic number.

6550638 is an abundant number, since it is smaller than the sum of its proper divisors (6584802).

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

6550638 is a wasteful number, since it uses less digits than its factorization.

6550638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 6550638 is about 2559.4214189930. The cubic root of 6550638 is about 187.1089378313.

The spelling of 6550638 in words is "six million, five hundred fifty thousand, six hundred thirty-eight".