6629421 has 8 divisors (see below), whose sum is σ = 8868384. Its totient is φ = 4405040.

The previous prime is 6629411. The next prime is 6629437. The reversal of 6629421 is 1249266.

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 6629421 - 2¹¹ = 6627373 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6629411) 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, 2535 + ... + 4436.

It is an arithmetic number, because the mean of its divisors is an integer number (1108548).

Almost surely, 2^6629421 is an apocalyptic number.

It is an amenable number.

6629421 is a deficient number, since it is larger than the sum of its proper divisors (2238963).

6629421 is a wasteful number, since it uses less digits than its factorization.

6629421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291.

The product of its digits is 5184, while the sum is 30.

The square root of 6629421 is about 2574.7662029784. The cubic root of 6629421 is about 187.8560558789.

The spelling of 6629421 in words is "six million, six hundred twenty-nine thousand, four hundred twenty-one".