640000607 has 2 divisors, whose sum is σ = 640000608. Its totient is φ = 640000606.

The previous prime is 640000597. The next prime is 640000639. The reversal of 640000607 is 706000046.

640000607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 640000607 - 2⁴ = 640000591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (640000687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320000303 + 320000304.

It is an arithmetic number, because the mean of its divisors is an integer number (320000304).

Almost surely, 2^640000607 is an apocalyptic number.

640000607 is a deficient number, since it is larger than the sum of its proper divisors (1).

640000607 is an equidigital number, since it uses as much as digits as its factorization.

640000607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 640000607 is about 25298.2332782351. The cubic root of 640000607 is about 861.7741484589.

The spelling of 640000607 in words is "six hundred forty million, six hundred seven", and thus it is an aban number.