6910421 has 8 divisors (see below), whose sum is σ = 8059200. Its totient is φ = 5922924.

The previous prime is 6910411. The next prime is 6910429. The reversal of 6910421 is 1240196.

It is a happy number.

It is not a de Polignac number, because 6910421 - 2²² = 2716117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6910429) 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, 9731 + ... + 10416.

It is an arithmetic number, because the mean of its divisors is an integer number (1007400).

Almost surely, 2^6910421 is an apocalyptic number.

It is an amenable number.

6910421 is a deficient number, since it is larger than the sum of its proper divisors (1148779).

6910421 is an equidigital number, since it uses as much as digits as its factorization.

6910421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20168 (or 20154 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 6910421 is about 2628.7679623732. The cubic root of 6910421 is about 190.4736198869.

The spelling of 6910421 in words is "six million, nine hundred ten thousand, four hundred twenty-one".