640000606097 has 2 divisors, whose sum is σ = 640000606098. Its totient is φ = 640000606096.

The previous prime is 640000606087. The next prime is 640000606111. The reversal of 640000606097 is 790606000046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 617802288016 + 22198318081 = 786004^2 + 148991^2 .

It is a cyclic number.

It is not a de Polignac number, because 640000606097 - 2⁴ = 640000606081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 640000606097.

It is not a weakly prime, because it can be changed into another prime (640000606087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320000303048 + 320000303049.

It is an arithmetic number, because the mean of its divisors is an integer number (320000303049).

Almost surely, 2^640000606097 is an apocalyptic number.

It is an amenable number.

640000606097 is a deficient number, since it is larger than the sum of its proper divisors (1).

640000606097 is an equidigital number, since it uses as much as digits as its factorization.

640000606097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 640000606097 in words is "six hundred forty billion, six hundred six thousand, ninety-seven".