64638341 has 2 divisors, whose sum is σ = 64638342. Its totient is φ = 64638340.

The previous prime is 64638337. The next prime is 64638347. The reversal of 64638341 is 14383646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61230625 + 3407716 = 7825^2 + 1846^2 .

It is a cyclic number.

It is not a de Polignac number, because 64638341 - 2² = 64638337 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64638347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32319170 + 32319171.

It is an arithmetic number, because the mean of its divisors is an integer number (32319171).

Almost surely, 2^64638341 is an apocalyptic number.

It is an amenable number.

64638341 is a deficient number, since it is larger than the sum of its proper divisors (1).

64638341 is an equidigital number, since it uses as much as digits as its factorization.

64638341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 64638341 is about 8039.7973233161. The cubic root of 64638341 is about 401.3254799888.

The spelling of 64638341 in words is "sixty-four million, six hundred thirty-eight thousand, three hundred forty-one".