10646549 has 2 divisors, whose sum is σ = 10646550. Its totient is φ = 10646548.

The previous prime is 10646543. The next prime is 10646561. The reversal of 10646549 is 94564601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7739524 + 2907025 = 2782^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 10646549 - 2⁴ = 10646533 is a prime.

It is a super-2 number, since 2×10646549² = 226698011218802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen 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 (10646543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5323274 + 5323275.

It is an arithmetic number, because the mean of its divisors is an integer number (5323275).

Almost surely, 2^10646549 is an apocalyptic number.

It is an amenable number.

10646549 is a deficient number, since it is larger than the sum of its proper divisors (1).

10646549 is an equidigital number, since it uses as much as digits as its factorization.

10646549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 10646549 is about 3262.9049940199. The cubic root of 10646549 is about 219.9900064331.

The spelling of 10646549 in words is "ten million, six hundred forty-six thousand, five hundred forty-nine".