64671241 has 2 divisors, whose sum is σ = 64671242. Its totient is φ = 64671240.

The previous prime is 64671197. The next prime is 64671259. The reversal of 64671241 is 14217646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37161216 + 27510025 = 6096^2 + 5245^2 .

It is a cyclic number.

It is not a de Polignac number, because 64671241 - 2⁹ = 64670729 is a prime.

It is not a weakly prime, because it can be changed into another prime (64674241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32335620 + 32335621.

It is an arithmetic number, because the mean of its divisors is an integer number (32335621).

Almost surely, 2^64671241 is an apocalyptic number.

It is an amenable number.

64671241 is a deficient number, since it is larger than the sum of its proper divisors (1).

64671241 is an equidigital number, since it uses as much as digits as its factorization.

64671241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 64671241 is about 8041.8431345059. The cubic root of 64671241 is about 401.3935581014.

Adding to 64671241 its reverse (14217646), we get a palindrome (78888887).

The spelling of 64671241 in words is "sixty-four million, six hundred seventy-one thousand, two hundred forty-one".