64340401 has 2 divisors, whose sum is σ = 64340402. Its totient is φ = 64340400.

The previous prime is 64340389. The next prime is 64340417. The reversal of 64340401 is 10404346.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43546801 + 20793600 = 6599^2 + 4560^2 .

It is a cyclic number.

It is not a de Polignac number, because 64340401 - 2⁵ = 64340369 is a prime.

It is equal to p_3804025 and since 64340401 and 3804025 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64340431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32170200 + 32170201.

It is an arithmetic number, because the mean of its divisors is an integer number (32170201).

Almost surely, 2^64340401 is an apocalyptic number.

It is an amenable number.

64340401 is a deficient number, since it is larger than the sum of its proper divisors (1).

64340401 is an equidigital number, since it uses as much as digits as its factorization.

64340401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 64340401 is about 8021.2468482151. The cubic root of 64340401 is about 400.7079151512.

Adding to 64340401 its reverse (10404346), we get a palindrome (74744747).

The spelling of 64340401 in words is "sixty-four million, three hundred forty thousand, four hundred one".