6428906877 has 4 divisors (see below), whose sum is σ = 8571875840. Its totient is φ = 4285937916.

The previous prime is 6428906867. The next prime is 6428906879. The reversal of 6428906877 is 7786098246.

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 not a de Polignac number, because 6428906877 - 2²⁰ = 6427858301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428906879) 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, 1071484477 + ... + 1071484482.

It is an arithmetic number, because the mean of its divisors is an integer number (2142968960).

Almost surely, 2^6428906877 is an apocalyptic number.

It is an amenable number.

6428906877 is a deficient number, since it is larger than the sum of its proper divisors (2142968963).

6428906877 is a wasteful number, since it uses less digits than its factorization.

6428906877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142968962.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The square root of 6428906877 is about 80180.4644349233. The cubic root of 6428906877 is about 1859.4266237625.

The spelling of 6428906877 in words is "six billion, four hundred twenty-eight million, nine hundred six thousand, eight hundred seventy-seven".