6375863021 has 4 divisors (see below), whose sum is σ = 6955486944. Its totient is φ = 5796239100.

The previous prime is 6375863009. The next prime is 6375863047. The reversal of 6375863021 is 1203685736.

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 6375863021 - 2¹⁰ = 6375861997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6375863021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6375863521) 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, 289811945 + ... + 289811966.

It is an arithmetic number, because the mean of its divisors is an integer number (1738871736).

Almost surely, 2^6375863021 is an apocalyptic number.

It is an amenable number.

6375863021 is a deficient number, since it is larger than the sum of its proper divisors (579623923).

6375863021 is a wasteful number, since it uses less digits than its factorization.

6375863021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579623922.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 6375863021 is about 79849.0013776002. The cubic root of 6375863021 is about 1854.2985528254.

The spelling of 6375863021 in words is "six billion, three hundred seventy-five million, eight hundred sixty-three thousand, twenty-one".