10616621 has 2 divisors, whose sum is σ = 10616622. Its totient is φ = 10616620.

The previous prime is 10616597. The next prime is 10616629. The reversal of 10616621 is 12661601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9954025 + 662596 = 3155^2 + 814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10616621 is a prime.

It is a super-2 number, since 2×10616621² = 225425282915282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10616629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5308310 + 5308311.

It is an arithmetic number, because the mean of its divisors is an integer number (5308311).

Almost surely, 2^10616621 is an apocalyptic number.

It is an amenable number.

10616621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10616621 is an equidigital number, since it uses as much as digits as its factorization.

10616621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 10616621 is about 3258.3156691763. The cubic root of 10616621 is about 219.7836785499.

The spelling of 10616621 in words is "ten million, six hundred sixteen thousand, six hundred twenty-one".