64344361 has 2 divisors, whose sum is σ = 64344362. Its totient is φ = 64344360.

The previous prime is 64344341. The next prime is 64344391. The reversal of 64344361 is 16344346.

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., 64304361 + 40000 = 8019^2 + 200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64344361 is a prime.

It is not a weakly prime, because it can be changed into another prime (64344311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32172180 + 32172181.

It is an arithmetic number, because the mean of its divisors is an integer number (32172181).

Almost surely, 2^64344361 is an apocalyptic number.

It is an amenable number.

64344361 is a deficient number, since it is larger than the sum of its proper divisors (1).

64344361 is an equidigital number, since it uses as much as digits as its factorization.

64344361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 31.

The square root of 64344361 is about 8021.4936888338. The cubic root of 64344361 is about 400.7161358584.

The spelling of 64344361 in words is "sixty-four million, three hundred forty-four thousand, three hundred sixty-one".