6477789697 has 4 divisors (see below), whose sum is σ = 6555835440. Its totient is φ = 6399743956.

The previous prime is 6477789679. The next prime is 6477789707. The reversal of 6477789697 is 7969877746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6477789697 - 2⁷ = 6477789569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6477787697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39022747 + ... + 39022912.

It is an arithmetic number, because the mean of its divisors is an integer number (1638958860).

Almost surely, 2^6477789697 is an apocalyptic number.

It is an amenable number.

6477789697 is a deficient number, since it is larger than the sum of its proper divisors (78045743).

6477789697 is an equidigital number, since it uses as much as digits as its factorization.

6477789697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78045742.

The product of its digits is 224042112, while the sum is 70.

The square root of 6477789697 is about 80484.7171641921. The cubic root of 6477789697 is about 1864.1275064627.

The spelling of 6477789697 in words is "six billion, four hundred seventy-seven million, seven hundred eighty-nine thousand, six hundred ninety-seven".