7286621 has 2 divisors, whose sum is σ = 7286622. Its totient is φ = 7286620.

The previous prime is 7286603. The next prime is 7286681. The reversal of 7286621 is 1266827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6943225 + 343396 = 2635^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 7286621 - 2¹⁸ = 7024477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7286681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643310 + 3643311.

It is an arithmetic number, because the mean of its divisors is an integer number (3643311).

Almost surely, 2^7286621 is an apocalyptic number.

It is an amenable number.

7286621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7286621 is an equidigital number, since it uses as much as digits as its factorization.

7286621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 7286621 is about 2699.3741867329. The cubic root of 7286621 is about 193.8691593051.

Adding to 7286621 its sum of digits (32), we get a triangular number (7286653 = T₃₈₁₇).

The spelling of 7286621 in words is "seven million, two hundred eighty-six thousand, six hundred twenty-one".