6972621 has 8 divisors (see below), whose sum is σ = 9382560. Its totient is φ = 4605552.

The previous prime is 6972617. The next prime is 6972629. The reversal of 6972621 is 1262796.

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

It is not a de Polignac number, because 6972621 - 2² = 6972617 is a prime.

6972621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6972629) 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, 10335 + ... + 10988.

It is an arithmetic number, because the mean of its divisors is an integer number (1172820).

Almost surely, 2^6972621 is an apocalyptic number.

It is an amenable number.

6972621 is a deficient number, since it is larger than the sum of its proper divisors (2409939).

6972621 is a wasteful number, since it uses less digits than its factorization.

6972621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21435.

The product of its digits is 9072, while the sum is 33.

The square root of 6972621 is about 2640.5720971032. The cubic root of 6972621 is about 191.0433917295.

The spelling of 6972621 in words is "six million, nine hundred seventy-two thousand, six hundred twenty-one".