6320021 has 4 divisors (see below), whose sum is σ = 6427200. Its totient is φ = 6212844.

The previous prime is 6320003. The next prime is 6320023. The reversal of 6320021 is 1200236.

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 a de Polignac number, because none of the positive numbers 2^k-6320021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6319978 and 6320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6320023) 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, 53501 + ... + 53618.

It is an arithmetic number, because the mean of its divisors is an integer number (1606800).

Almost surely, 2^6320021 is an apocalyptic number.

It is an amenable number.

6320021 is a deficient number, since it is larger than the sum of its proper divisors (107179).

6320021 is a wasteful number, since it uses less digits than its factorization.

6320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107178.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 6320021 is about 2513.9651946676. The cubic root of 6320021 is about 184.8869140869.

Adding to 6320021 its reverse (1200236), we get a palindrome (7520257).

The spelling of 6320021 in words is "six million, three hundred twenty thousand, twenty-one".