64647097 has 2 divisors, whose sum is σ = 64647098. Its totient is φ = 64647096.

The previous prime is 64647049. The next prime is 64647109. The reversal of 64647097 is 79074646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49716601 + 14930496 = 7051^2 + 3864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64647097 is a prime.

It is not a weakly prime, because it can be changed into another prime (64647797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32323548 + 32323549.

It is an arithmetic number, because the mean of its divisors is an integer number (32323549).

Almost surely, 2^64647097 is an apocalyptic number.

It is an amenable number.

64647097 is a deficient number, since it is larger than the sum of its proper divisors (1).

64647097 is an equidigital number, since it uses as much as digits as its factorization.

64647097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 64647097 is about 8040.3418459665. The cubic root of 64647097 is about 401.3436005407.

The spelling of 64647097 in words is "sixty-four million, six hundred forty-seven thousand, ninety-seven".