6972321 has 8 divisors (see below), whose sum is σ = 9512800. Its totient is φ = 4540032.

The previous prime is 6972319. The next prime is 6972359. The reversal of 6972321 is 1232796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6972321 - 2¹ = 6972319 is a prime.

It is a super-2 number, since 2×6972321² = 97226520254082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6972311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26896 + ... + 27153.

It is an arithmetic number, because the mean of its divisors is an integer number (1189100).

Almost surely, 2^6972321 is an apocalyptic number.

It is an amenable number.

6972321 is a deficient number, since it is larger than the sum of its proper divisors (2540479).

6972321 is a wasteful number, since it uses less digits than its factorization.

6972321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54095.

The product of its digits is 4536, while the sum is 30.

The square root of 6972321 is about 2640.5152906204. The cubic root of 6972321 is about 191.0406517823.

It can be divided in two parts, 69 and 72321, that added together give a triangular number (72390 = T₃₈₀).

The spelling of 6972321 in words is "six million, nine hundred seventy-two thousand, three hundred twenty-one".