6649589007 has 6 divisors (see below), whose sum is σ = 9604961912. Its totient is φ = 4433059332.

The previous prime is 6649589003. The next prime is 6649589033. The reversal of 6649589007 is 7009859466.

6649589007 is a `hidden beast` number, since 66 + 495 + 8 + 90 + 0 + 7 = 666.

It is not a de Polignac number, because 6649589007 - 2² = 6649589003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649589003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 369421603 + ... + 369421620.

Almost surely, 2^6649589007 is an apocalyptic number.

6649589007 is a deficient number, since it is larger than the sum of its proper divisors (2955372905).

6649589007 is a wasteful number, since it uses less digits than its factorization.

6649589007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738843229 (or 738843226 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 6649589007 is about 81545.0121527982. The cubic root of 6649589007 is about 1880.4636142532.

The spelling of 6649589007 in words is "six billion, six hundred forty-nine million, five hundred eighty-nine thousand, seven".