7644640607 has 2 divisors, whose sum is σ = 7644640608. Its totient is φ = 7644640606.

The previous prime is 7644640603. The next prime is 7644640639. The reversal of 7644640607 is 7060464467.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7644640607 - 2² = 7644640603 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7644640603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3822320303 + 3822320304.

It is an arithmetic number, because the mean of its divisors is an integer number (3822320304).

Almost surely, 2^7644640607 is an apocalyptic number.

7644640607 is a deficient number, since it is larger than the sum of its proper divisors (1).

7644640607 is an equidigital number, since it uses as much as digits as its factorization.

7644640607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 44.

The square root of 7644640607 is about 87433.6354442614. The cubic root of 7644640607 is about 1969.9370922219.

The spelling of 7644640607 in words is "seven billion, six hundred forty-four million, six hundred forty thousand, six hundred seven".