10641661 has 2 divisors, whose sum is σ = 10641662. Its totient is φ = 10641660.

The previous prime is 10641629. The next prime is 10641667. The reversal of 10641661 is 16614601.

10641661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10304100 + 337561 = 3210^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 10641661 - 2⁵ = 10641629 is a prime.

It is a super-2 number, since 2×10641661² = 226489897677842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10641667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5320830 + 5320831.

It is an arithmetic number, because the mean of its divisors is an integer number (5320831).

Almost surely, 2^10641661 is an apocalyptic number.

It is an amenable number.

10641661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10641661 is an equidigital number, since it uses as much as digits as its factorization.

10641661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 10641661 is about 3262.1558822349. The cubic root of 10641661 is about 219.9563343090.

The spelling of 10641661 in words is "ten million, six hundred forty-one thousand, six hundred sixty-one".