6428478347 has 4 divisors (see below), whose sum is σ = 6428644440. Its totient is φ = 6428312256.

The previous prime is 6428478323. The next prime is 6428478367. The reversal of 6428478347 is 7438748246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7438748246 = 2 ⋅3719374123.

It is a cyclic number.

It is not a de Polignac number, because 6428478347 - 2⁶ = 6428478283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428478317) 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, 9068 + ... + 113750.

It is an arithmetic number, because the mean of its divisors is an integer number (1607161110).

Almost surely, 2^6428478347 is an apocalyptic number.

6428478347 is a deficient number, since it is larger than the sum of its proper divisors (166093).

6428478347 is a wasteful number, since it uses less digits than its factorization.

6428478347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166092.

The product of its digits is 7225344, while the sum is 53.

The square root of 6428478347 is about 80177.7921060439. The cubic root of 6428478347 is about 1859.3853084030.

The spelling of 6428478347 in words is "six billion, four hundred twenty-eight million, four hundred seventy-eight thousand, three hundred forty-seven".