7646421 has 8 divisors (see below), whose sum is σ = 10231200. Its totient is φ = 5079632.

The previous prime is 7646393. The next prime is 7646423. The reversal of 7646421 is 1246467.

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 7646421 - 2⁷ = 7646293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7646423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3471 + ... + 5228.

It is an arithmetic number, because the mean of its divisors is an integer number (1278900).

Almost surely, 2^7646421 is an apocalyptic number.

It is an amenable number.

7646421 is a deficient number, since it is larger than the sum of its proper divisors (2584779).

7646421 is a wasteful number, since it uses less digits than its factorization.

7646421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8995.

The product of its digits is 8064, while the sum is 30.

The square root of 7646421 is about 2765.2162664067. The cubic root of 7646421 is about 197.0090009372.

The spelling of 7646421 in words is "seven million, six hundred forty-six thousand, four hundred twenty-one".