7206621 has 8 divisors (see below), whose sum is σ = 9659904. Its totient is φ = 4778880.

The previous prime is 7206607. The next prime is 7206629. The reversal of 7206621 is 1266027.

It is a happy number.

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

It is not a de Polignac number, because 7206621 - 2⁹ = 7206109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7206591 and 7206600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7206629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5716 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (1207488).

Almost surely, 2^7206621 is an apocalyptic number.

It is an amenable number.

7206621 is a deficient number, since it is larger than the sum of its proper divisors (2453283).

7206621 is a wasteful number, since it uses less digits than its factorization.

7206621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12771.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 7206621 is about 2684.5150400026. The cubic root of 7206621 is about 193.1570486502.

The spelling of 7206621 in words is "seven million, two hundred six thousand, six hundred twenty-one".