64090843 has 2 divisors, whose sum is σ = 64090844. Its totient is φ = 64090842.

The previous prime is 64090739. The next prime is 64090853. The reversal of 64090843 is 34809046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64090843 - 2¹³ = 64082651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64090799 and 64090808.

It is not a weakly prime, because it can be changed into another prime (64090853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32045421 + 32045422.

It is an arithmetic number, because the mean of its divisors is an integer number (32045422).

Almost surely, 2^64090843 is an apocalyptic number.

64090843 is a deficient number, since it is larger than the sum of its proper divisors (1).

64090843 is an equidigital number, since it uses as much as digits as its factorization.

64090843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 64090843 is about 8005.6756741702. The cubic root of 64090843 is about 400.1891667757.

Adding to 64090843 its reverse (34809046), we get a palindrome (98899889).

The spelling of 64090843 in words is "sixty-four million, ninety thousand, eight hundred forty-three".