7236643 has 2 divisors, whose sum is σ = 7236644. Its totient is φ = 7236642.

The previous prime is 7236617. The next prime is 7236683. The reversal of 7236643 is 3466327.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7236643 is a prime.

7236643 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7236683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3618321 + 3618322.

It is an arithmetic number, because the mean of its divisors is an integer number (3618322).

Almost surely, 2^7236643 is an apocalyptic number.

7236643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7236643 is an equidigital number, since it uses as much as digits as its factorization.

7236643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 31.

The square root of 7236643 is about 2690.1009274747. The cubic root of 7236643 is about 193.4249008047.

The spelling of 7236643 in words is "seven million, two hundred thirty-six thousand, six hundred forty-three".