64302643 has 2 divisors, whose sum is σ = 64302644. Its totient is φ = 64302642.

The previous prime is 64302617. The next prime is 64302661. The reversal of 64302643 is 34620346.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64302643 is a prime.

It is not a weakly prime, because it can be changed into another prime (64302683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32151321 + 32151322.

It is an arithmetic number, because the mean of its divisors is an integer number (32151322).

Almost surely, 2^64302643 is an apocalyptic number.

64302643 is a deficient number, since it is larger than the sum of its proper divisors (1).

64302643 is an equidigital number, since it uses as much as digits as its factorization.

64302643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 64302643 is about 8018.8928786959. The cubic root of 64302643 is about 400.6295150074.

Adding to 64302643 its reverse (34620346), we get a palindrome (98922989).

The spelling of 64302643 in words is "sixty-four million, three hundred two thousand, six hundred forty-three".