6606380997 has 12 divisors (see below), whose sum is σ = 10044790080. Its totient is φ = 4172451048.

The previous prime is 6606380951. The next prime is 6606381049. The reversal of 6606380997 is 7990836066.

It is a happy number.

It is not a de Polignac number, because 6606380997 - 2¹¹ = 6606378949 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6606380927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19316733 + ... + 19317074.

It is an arithmetic number, because the mean of its divisors is an integer number (837065840).

Almost surely, 2^6606380997 is an apocalyptic number.

It is an amenable number.

6606380997 is a deficient number, since it is larger than the sum of its proper divisors (3438409083).

6606380997 is a wasteful number, since it uses less digits than its factorization.

6606380997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38633832 (or 38633829 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The square root of 6606380997 is about 81279.6468803845. The cubic root of 6606380997 is about 1876.3817722860.

The spelling of 6606380997 in words is "six billion, six hundred six million, three hundred eighty thousand, nine hundred ninety-seven".