64041623 has 2 divisors, whose sum is σ = 64041624. Its totient is φ = 64041622.

The previous prime is 64041619. The next prime is 64041673. The reversal of 64041623 is 32614046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64041623 - 2² = 64041619 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 64041592 and 64041601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64041673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32020811 + 32020812.

It is an arithmetic number, because the mean of its divisors is an integer number (32020812).

Almost surely, 2^64041623 is an apocalyptic number.

64041623 is a deficient number, since it is larger than the sum of its proper divisors (1).

64041623 is an equidigital number, since it uses as much as digits as its factorization.

64041623 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 26.

The square root of 64041623 is about 8002.6010146702. The cubic root of 64041623 is about 400.0866957916.

Adding to 64041623 its reverse (32614046), we get a palindrome (96655669).

The spelling of 64041623 in words is "sixty-four million, forty-one thousand, six hundred twenty-three".