6631646 has 32 divisors (see below), whose sum is σ = 12130560. Its totient is φ = 2655936.

The previous prime is 6631643. The next prime is 6631661. The reversal of 6631646 is 6461366.

6631646 = T₁₃₇₃ + T₁₃₇₄ + ... + T₁₃₇₉.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631643) 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, 28346 + ... + 28578.

It is an arithmetic number, because the mean of its divisors is an integer number (379080).

Almost surely, 2^6631646 is an apocalyptic number.

6631646 is a deficient number, since it is larger than the sum of its proper divisors (5498914).

6631646 is a wasteful number, since it uses less digits than its factorization.

6631646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

The product of its digits is 15552, while the sum is 32.

The square root of 6631646 is about 2575.1982447959. The cubic root of 6631646 is about 187.8770699298.

The spelling of 6631646 in words is "six million, six hundred thirty-one thousand, six hundred forty-six".