6690448331 has 8 divisors (see below), whose sum is σ = 7646724864. Its totient is φ = 5734296360.

The previous prime is 6690448229. The next prime is 6690448337. The reversal of 6690448331 is 1338440966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6690448331 - 2²² = 6686254027 is a prime.

It is a super-2 number, since 2×6690448331² = 89524197739561371122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6690448337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174596 + ... + 209438.

It is an arithmetic number, because the mean of its divisors is an integer number (955840608).

Almost surely, 2^6690448331 is an apocalyptic number.

6690448331 is a deficient number, since it is larger than the sum of its proper divisors (956276533).

6690448331 is a wasteful number, since it uses less digits than its factorization.

6690448331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62281.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 6690448331 is about 81795.1608042921. The cubic root of 6690448331 is about 1884.3073422225.

The spelling of 6690448331 in words is "six billion, six hundred ninety million, four hundred forty-eight thousand, three hundred thirty-one".