64217401 has 2 divisors, whose sum is σ = 64217402. Its totient is φ = 64217400.

The previous prime is 64217389. The next prime is 64217411. The reversal of 64217401 is 10471246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56265001 + 7952400 = 7501^2 + 2820^2 .

It is a cyclic number.

It is not a de Polignac number, because 64217401 - 2¹³ = 64209209 is a prime.

It is not a weakly prime, because it can be changed into another prime (64217411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32108700 + 32108701.

It is an arithmetic number, because the mean of its divisors is an integer number (32108701).

Almost surely, 2^64217401 is an apocalyptic number.

It is an amenable number.

64217401 is a deficient number, since it is larger than the sum of its proper divisors (1).

64217401 is an equidigital number, since it uses as much as digits as its factorization.

64217401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 64217401 is about 8013.5760431907. The cubic root of 64217401 is about 400.4524068771.

Adding to 64217401 its reverse (10471246), we get a palindrome (74688647).

The spelling of 64217401 in words is "sixty-four million, two hundred seventeen thousand, four hundred one".