64304381 has 2 divisors, whose sum is σ = 64304382. Its totient is φ = 64304380.

The previous prime is 64304347. The next prime is 64304411. The reversal of 64304381 is 18340346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59151481 + 5152900 = 7691^2 + 2270^2 .

It is a cyclic number.

It is not a de Polignac number, because 64304381 - 2¹⁴ = 64287997 is a prime.

It is a super-2 number, since 2×64304381² = 8270106831586322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64304311) 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, 32152190 + 32152191.

It is an arithmetic number, because the mean of its divisors is an integer number (32152191).

Almost surely, 2^64304381 is an apocalyptic number.

It is an amenable number.

64304381 is a deficient number, since it is larger than the sum of its proper divisors (1).

64304381 is an equidigital number, since it uses as much as digits as its factorization.

64304381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 64304381 is about 8019.0012470382. The cubic root of 64304381 is about 400.6331244382.

The spelling of 64304381 in words is "sixty-four million, three hundred four thousand, three hundred eighty-one".