6635009 has 4 divisors (see below), whose sum is σ = 6984240. Its totient is φ = 6285780.

The previous prime is 6635003. The next prime is 6635011. The reversal of 6635009 is 9005366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6635009 - 2¹² = 6630913 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6635003) 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, 174587 + ... + 174624.

It is an arithmetic number, because the mean of its divisors is an integer number (1746060).

Almost surely, 2^6635009 is an apocalyptic number.

It is an amenable number.

6635009 is a deficient number, since it is larger than the sum of its proper divisors (349231).

6635009 is a wasteful number, since it uses less digits than its factorization.

6635009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349230.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 6635009 is about 2575.8511214742. The cubic root of 6635009 is about 187.9088229221.

The spelling of 6635009 in words is "six million, six hundred thirty-five thousand, nine".