64400341 has 2 divisors, whose sum is σ = 64400342. Its totient is φ = 64400340.

The previous prime is 64400321. The next prime is 64400383. The reversal of 64400341 is 14300446.

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., 63266116 + 1134225 = 7954^2 + 1065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64400341 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64400321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32200170 + 32200171.

It is an arithmetic number, because the mean of its divisors is an integer number (32200171).

Almost surely, 2^64400341 is an apocalyptic number.

It is an amenable number.

64400341 is a deficient number, since it is larger than the sum of its proper divisors (1).

64400341 is an equidigital number, since it uses as much as digits as its factorization.

64400341 is an odious number, because the sum of its binary digits is odd.

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

The square root of 64400341 is about 8024.9823052764. The cubic root of 64400341 is about 400.8323106961.

Adding to 64400341 its reverse (14300446), we get a palindrome (78700787).

The spelling of 64400341 in words is "sixty-four million, four hundred thousand, three hundred forty-one".