7669977217 has 16 divisors (see below), whose sum is σ = 9071971200. Its totient is φ = 6344755200.

The previous prime is 7669977199. The next prime is 7669977277. The reversal of 7669977217 is 7127799667.

It is a de Polignac number, because none of the positive numbers 2^k-7669977217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7669977277) 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, 538842 + ... + 552892.

It is an arithmetic number, because the mean of its divisors is an integer number (566998200).

Almost surely, 2^7669977217 is an apocalyptic number.

It is an amenable number.

7669977217 is a deficient number, since it is larger than the sum of its proper divisors (1401993983).

7669977217 is a wasteful number, since it uses less digits than its factorization.

7669977217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16776.

The product of its digits is 14002632, while the sum is 61.

The square root of 7669977217 is about 87578.4061113240. The cubic root of 7669977217 is about 1972.1110112307. Note that the first 3 decimals are identical.

The spelling of 7669977217 in words is "seven billion, six hundred sixty-nine million, nine hundred seventy-seven thousand, two hundred seventeen".