640114597 has 2 divisors, whose sum is σ = 640114598. Its totient is φ = 640114596.

The previous prime is 640114577. The next prime is 640114621. The reversal of 640114597 is 795411046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 575328196 + 64786401 = 23986^2 + 8049^2 .

It is a cyclic number.

It is not a de Polignac number, because 640114597 - 2¹¹ = 640112549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640114537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320057298 + 320057299.

It is an arithmetic number, because the mean of its divisors is an integer number (320057299).

Almost surely, 2^640114597 is an apocalyptic number.

It is an amenable number.

640114597 is a deficient number, since it is larger than the sum of its proper divisors (1).

640114597 is an equidigital number, since it uses as much as digits as its factorization.

640114597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 640114597 is about 25300.4861020495. The cubic root of 640114597 is about 861.8253087248.

The spelling of 640114597 in words is "six hundred forty million, one hundred fourteen thousand, five hundred ninety-seven".