64004623 has 2 divisors, whose sum is σ = 64004624. Its totient is φ = 64004622.

The previous prime is 64004621. The next prime is 64004627. The reversal of 64004623 is 32640046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64004623 - 2¹ = 64004621 is a prime.

Together with 64004621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64004621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32002311 + 32002312.

It is an arithmetic number, because the mean of its divisors is an integer number (32002312).

Almost surely, 2^64004623 is an apocalyptic number.

64004623 is a deficient number, since it is larger than the sum of its proper divisors (1).

64004623 is an equidigital number, since it uses as much as digits as its factorization.

64004623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 64004623 is about 8000.2889322824. The cubic root of 64004623 is about 400.0096310181.

Adding to 64004623 its reverse (32640046), we get a palindrome (96644669).

The spelling of 64004623 in words is "sixty-four million, four thousand, six hundred twenty-three".