6631992 has 24 divisors (see below), whose sum is σ = 17961840. Its totient is φ = 2210640.

The previous prime is 6631979. The next prime is 6631993. The reversal of 6631992 is 2991366.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45984 + ... + 46127.

It is an arithmetic number, because the mean of its divisors is an integer number (748410).

Almost surely, 2^6631992 is an apocalyptic number.

It is an amenable number.

6631992 is an abundant number, since it is smaller than the sum of its proper divisors (11329848).

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

6631992 is a wasteful number, since it uses less digits than its factorization.

6631992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92123 (or 92116 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 6631992 is about 2575.2654232137. The cubic root of 6631992 is about 187.8803373105.

The spelling of 6631992 in words is "six million, six hundred thirty-one thousand, nine hundred ninety-two".