10641861 has 10 divisors (see below), whose sum is σ = 15897222. Its totient is φ = 7094520.

The previous prime is 10641833. The next prime is 10641863. The reversal of 10641861 is 16814601.

10641861 is a `hidden beast` number, since 10 + 641 + 8 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10439361 + 202500 = 3231^2 + 450^2 .

It is not a de Polignac number, because 10641861 - 2⁶ = 10641797 is a prime.

It is a super-2 number, since 2×10641861² = 226498411086642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10641863) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 65610 + ... + 65771.

Almost surely, 2^10641861 is an apocalyptic number.

It is an amenable number.

10641861 is a deficient number, since it is larger than the sum of its proper divisors (5255361).

10641861 is an equidigital number, since it uses as much as digits as its factorization.

10641861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131393 (or 131384 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 10641861 is about 3262.1865366652. The cubic root of 10641861 is about 219.9577122578.

The spelling of 10641861 in words is "ten million, six hundred forty-one thousand, eight hundred sixty-one".