6428023643 has 8 divisors (see below), whose sum is σ = 6473676960. Its totient is φ = 6382411200.

The previous prime is 6428023559. The next prime is 6428023661. The reversal of 6428023643 is 3463208246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6428023643 - 2¹² = 6428019547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6428023597 and 6428023606.

It is not an unprimeable number, because it can be changed into a prime (6425023643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349973 + ... + 367881.

It is an arithmetic number, because the mean of its divisors is an integer number (809209620).

Almost surely, 2^6428023643 is an apocalyptic number.

6428023643 is a deficient number, since it is larger than the sum of its proper divisors (45653317).

6428023643 is a wasteful number, since it uses less digits than its factorization.

6428023643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20437.

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 6428023643 is about 80174.9564577369. The cubic root of 6428023643 is about 1859.3414675526.

The spelling of 6428023643 in words is "six billion, four hundred twenty-eight million, twenty-three thousand, six hundred forty-three".