6664632 has 64 divisors (see below), whose sum is σ = 18416160. Its totient is φ = 1996800.

The previous prime is 6664631. The next prime is 6664643. The reversal of 6664632 is 2364666.

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

It is a junction number, because it is equal to n+sod(n) for n = 6664593 and 6664602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664631) 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, 12532 + ... + 13052.

Almost surely, 2^6664632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6664632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9208080).

6664632 is an abundant number, since it is smaller than the sum of its proper divisors (11751528).

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

6664632 is a wasteful number, since it uses less digits than its factorization.

6664632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 580 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 6664632 is about 2581.5948558982. The cubic root of 6664632 is about 188.1880568816.

The spelling of 6664632 in words is "six million, six hundred sixty-four thousand, six hundred thirty-two".