10641561 has 16 divisors (see below), whose sum is σ = 16368000. Its totient is φ = 6023808.

The previous prime is 10641559. The next prime is 10641563. The reversal of 10641561 is 16514601.

It is an interprime number because it is at equal distance from previous prime (10641559) and next prime (10641563).

It is not a de Polignac number, because 10641561 - 2¹ = 10641559 is a prime.

It is a super-2 number, since 2×10641561² = 226485641033442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10641563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36 + ... + 4613.

It is an arithmetic number, because the mean of its divisors is an integer number (1023000).

Almost surely, 2^10641561 is an apocalyptic number.

It is an amenable number.

10641561 is a deficient number, since it is larger than the sum of its proper divisors (5726439).

10641561 is a wasteful number, since it uses less digits than its factorization.

10641561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 10641561 is about 3262.1405549118. The cubic root of 10641561 is about 219.9556453281.

The spelling of 10641561 in words is "ten million, six hundred forty-one thousand, five hundred sixty-one".