10307621 has 2 divisors, whose sum is σ = 10307622. Its totient is φ = 10307620.

The previous prime is 10307587. The next prime is 10307629. The reversal of 10307621 is 12670301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8236900 + 2070721 = 2870^2 + 1439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10307621 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10307593 and 10307602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10307629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5153810 + 5153811.

It is an arithmetic number, because the mean of its divisors is an integer number (5153811).

Almost surely, 2^10307621 is an apocalyptic number.

It is an amenable number.

10307621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10307621 is an equidigital number, since it uses as much as digits as its factorization.

10307621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 10307621 is about 3210.5483955237. The cubic root of 10307621 is about 217.6303600431.

Adding to 10307621 its reverse (12670301), we get a palindrome (22977922).

The spelling of 10307621 in words is "ten million, three hundred seven thousand, six hundred twenty-one".