64865611 has 2 divisors, whose sum is σ = 64865612. Its totient is φ = 64865610.

The previous prime is 64865597. The next prime is 64865617. The reversal of 64865611 is 11656846.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64865611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64865617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32432805 + 32432806.

It is an arithmetic number, because the mean of its divisors is an integer number (32432806).

Almost surely, 2^64865611 is an apocalyptic number.

64865611 is a deficient number, since it is larger than the sum of its proper divisors (1).

64865611 is an equidigital number, since it uses as much as digits as its factorization.

64865611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 64865611 is about 8053.9189839481. The cubic root of 64865611 is about 401.7952865606.

The spelling of 64865611 in words is "sixty-four million, eight hundred sixty-five thousand, six hundred eleven".