6909645089 has 16 divisors (see below), whose sum is σ = 7500178560. Its totient is φ = 6343920000.

The previous prime is 6909645023. The next prime is 6909645101. The reversal of 6909645089 is 9805469096.

It is a cyclic number.

It is not a de Polignac number, because 6909645089 - 2¹² = 6909640993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6909644089) 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, 88259 + ... + 146999.

It is an arithmetic number, because the mean of its divisors is an integer number (468761160).

Almost surely, 2^6909645089 is an apocalyptic number.

It is an amenable number.

6909645089 is a deficient number, since it is larger than the sum of its proper divisors (590533471).

6909645089 is a wasteful number, since it uses less digits than its factorization.

6909645089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58952.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The square root of 6909645089 is about 83124.2749682666. The cubic root of 6909645089 is about 1904.6649074538.

The spelling of 6909645089 in words is "six billion, nine hundred nine million, six hundred forty-five thousand, eighty-nine".