6691632 has 20 divisors (see below), whose sum is σ = 17286840. Its totient is φ = 2230528.

The previous prime is 6691631. The next prime is 6691637. The reversal of 6691632 is 2361966.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6691593 and 6691602.

It is not an unprimeable number, because it can be changed into a prime (6691631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69657 + ... + 69752.

It is an arithmetic number, because the mean of its divisors is an integer number (864342).

Almost surely, 2^6691632 is an apocalyptic number.

It is an amenable number.

6691632 is an abundant number, since it is smaller than the sum of its proper divisors (10595208).

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

6691632 is a wasteful number, since it uses less digits than its factorization.

6691632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139420 (or 139414 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 6691632 is about 2586.8188958642. The cubic root of 6691632 is about 188.4418459074.

The spelling of 6691632 in words is "six million, six hundred ninety-one thousand, six hundred thirty-two".