6690254609 has 16 divisors (see below), whose sum is σ = 6838872768. Its totient is φ = 6543624192.

The previous prime is 6690254603. The next prime is 6690254611. The reversal of 6690254609 is 9064520966.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6690254609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6690254603) 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, 5118134 + ... + 5119440.

It is an arithmetic number, because the mean of its divisors is an integer number (427429548).

Almost surely, 2^6690254609 is an apocalyptic number.

It is an amenable number.

6690254609 is a deficient number, since it is larger than the sum of its proper divisors (148618159).

6690254609 is a wasteful number, since it uses less digits than its factorization.

6690254609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 6690254609 is about 81793.9766058602. The cubic root of 6690254609 is about 1884.2891553342.

The spelling of 6690254609 in words is "six billion, six hundred ninety million, two hundred fifty-four thousand, six hundred nine".