6974921 has 4 divisors (see below), whose sum is σ = 7093200. Its totient is φ = 6856644.

The previous prime is 6974917. The next prime is 6974939. The reversal of 6974921 is 1294796.

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 6974921 - 2² = 6974917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6974321) 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 3 ways as a sum of consecutive naturals, for example, 59051 + ... + 59168.

It is an arithmetic number, because the mean of its divisors is an integer number (1773300).

Almost surely, 2^6974921 is an apocalyptic number.

It is an amenable number.

6974921 is a deficient number, since it is larger than the sum of its proper divisors (118279).

6974921 is a wasteful number, since it uses less digits than its factorization.

6974921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118278.

The product of its digits is 27216, while the sum is 38.

The square root of 6974921 is about 2641.0075728782. The cubic root of 6974921 is about 191.0643953806.

The spelling of 6974921 in words is "six million, nine hundred seventy-four thousand, nine hundred twenty-one".