10643849 has 2 divisors, whose sum is σ = 10643850. Its totient is φ = 10643848.

The previous prime is 10643813. The next prime is 10643851. The reversal of 10643849 is 94834601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10445824 + 198025 = 3232^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 10643849 - 2⁸ = 10643593 is a prime.

It is a super-2 number, since 2×10643849² = 226583043069602, which contains 22 as substring.

Together with 10643851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10643449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5321924 + 5321925.

It is an arithmetic number, because the mean of its divisors is an integer number (5321925).

Almost surely, 2^10643849 is an apocalyptic number.

It is an amenable number.

10643849 is a deficient number, since it is larger than the sum of its proper divisors (1).

10643849 is an equidigital number, since it uses as much as digits as its factorization.

10643849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 10643849 is about 3262.4912260418. The cubic root of 10643849 is about 219.9714081300.

It can be divided in two parts, 1064 and 3849, that added together give a cube (4913 = 17³).

The spelling of 10643849 in words is "ten million, six hundred forty-three thousand, eight hundred forty-nine".