105247643 has 2 divisors, whose sum is σ = 105247644. Its totient is φ = 105247642.

The previous prime is 105247613. The next prime is 105247693. The reversal of 105247643 is 346742501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105247643 - 2⁶ = 105247579 is a prime.

It is a super-2 number, since 2×105247643² = 22154132714110898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105247613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52623821 + 52623822.

It is an arithmetic number, because the mean of its divisors is an integer number (52623822).

Almost surely, 2^105247643 is an apocalyptic number.

105247643 is a deficient number, since it is larger than the sum of its proper divisors (1).

105247643 is an equidigital number, since it uses as much as digits as its factorization.

105247643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 105247643 is about 10259.0273905473. The cubic root of 105247643 is about 472.1399969550.

The spelling of 105247643 in words is "one hundred five million, two hundred forty-seven thousand, six hundred forty-three".