64216001 has 2 divisors, whose sum is σ = 64216002. Its totient is φ = 64216000.

The previous prime is 64215997. The next prime is 64216003. The reversal of 64216001 is 10061246.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51825601 + 12390400 = 7199^2 + 3520^2 .

It is a cyclic number.

It is not a de Polignac number, because 64216001 - 2² = 64215997 is a prime.

Together with 64216003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64216003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32108000 + 32108001.

It is an arithmetic number, because the mean of its divisors is an integer number (32108001).

Almost surely, 2^64216001 is an apocalyptic number.

It is an amenable number.

64216001 is a deficient number, since it is larger than the sum of its proper divisors (1).

64216001 is an equidigital number, since it uses as much as digits as its factorization.

64216001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 64216001 is about 8013.4886909510. The cubic root of 64216001 is about 400.4494967757.

Adding to 64216001 its reverse (10061246), we get a palindrome (74277247).

The spelling of 64216001 in words is "sixty-four million, two hundred sixteen thousand, one".