6317921 has 4 divisors (see below), whose sum is σ = 6343344. Its totient is φ = 6292500.

The previous prime is 6317887. The next prime is 6317923. The reversal of 6317921 is 1297136.

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 6317921 - 2¹⁰ = 6316897 is a prime.

It is a super-2 number, since 2×6317921² = 79832251524482, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (6317923) 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, 12335 + ... + 12836.

It is an arithmetic number, because the mean of its divisors is an integer number (1585836).

Almost surely, 2^6317921 is an apocalyptic number.

It is an amenable number.

6317921 is a deficient number, since it is larger than the sum of its proper divisors (25423).

6317921 is a wasteful number, since it uses less digits than its factorization.

6317921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25422.

The product of its digits is 2268, while the sum is 29.

The square root of 6317921 is about 2513.5474930862. The cubic root of 6317921 is about 184.8664339054.

The spelling of 6317921 in words is "six million, three hundred seventeen thousand, nine hundred twenty-one".