64426423 has 2 divisors, whose sum is σ = 64426424. Its totient is φ = 64426422.

The previous prime is 64426409. The next prime is 64426441. The reversal of 64426423 is 32462446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64426423 - 2⁵ = 64426391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64426123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32213211 + 32213212.

It is an arithmetic number, because the mean of its divisors is an integer number (32213212).

Almost surely, 2^64426423 is an apocalyptic number.

64426423 is a deficient number, since it is larger than the sum of its proper divisors (1).

64426423 is an equidigital number, since it uses as much as digits as its factorization.

64426423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 31.

The square root of 64426423 is about 8026.6071910864. The cubic root of 64426423 is about 400.8864154680.

Adding to 64426423 its reverse (32462446), we get a palindrome (96888869).

The spelling of 64426423 in words is "sixty-four million, four hundred twenty-six thousand, four hundred twenty-three".