64424413 has 2 divisors, whose sum is σ = 64424414. Its totient is φ = 64424412.

The previous prime is 64424389. The next prime is 64424429. The reversal of 64424413 is 31442446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59397849 + 5026564 = 7707^2 + 2242^2 .

It is a cyclic number.

It is not a de Polignac number, because 64424413 - 2²⁵ = 30869981 is a prime.

It is equal to p_3808720 and since 64424413 and 3808720 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64424473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32212206 + 32212207.

It is an arithmetic number, because the mean of its divisors is an integer number (32212207).

Almost surely, 2^64424413 is an apocalyptic number.

It is an amenable number.

64424413 is a deficient number, since it is larger than the sum of its proper divisors (1).

64424413 is an equidigital number, since it uses as much as digits as its factorization.

64424413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

The square root of 64424413 is about 8026.4819815409. The cubic root of 64424413 is about 400.8822464225.

Adding to 64424413 its reverse (31442446), we get a palindrome (95866859).

The spelling of 64424413 in words is "sixty-four million, four hundred twenty-four thousand, four hundred thirteen".