6909770775 has 24 divisors (see below), whose sum is σ = 11426647120. Its totient is φ = 3684407040.

The previous prime is 6909770743. The next prime is 6909770783. The reversal of 6909770775 is 5770779096.

It is not a de Polignac number, because 6909770775 - 2⁵ = 6909770743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523659 + ... + 536691.

Almost surely, 2^6909770775 is an apocalyptic number.

6909770775 is a deficient number, since it is larger than the sum of its proper divisors (4516876345).

6909770775 is a wasteful number, since it uses less digits than its factorization.

6909770775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20115 (or 20110 counting only the distinct ones).

The product of its (nonzero) digits is 5834430, while the sum is 57.

The square root of 6909770775 is about 83125.0309774378. The cubic root of 6909770775 is about 1904.6764559612.

The spelling of 6909770775 in words is "six billion, nine hundred nine million, seven hundred seventy thousand, seven hundred seventy-five".