7630640663 has 4 divisors (see below), whose sum is σ = 7636881168. Its totient is φ = 7624400160.

The previous prime is 7630640657. The next prime is 7630640671. The reversal of 7630640663 is 3660460367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3660460367 = 61 ⋅60007547.

It is a cyclic number.

It is not a de Polignac number, because 7630640663 - 2¹⁸ = 7630378519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7630640663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7630640623) 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 in 3 ways as a sum of consecutive naturals, for example, 3118418 + ... + 3120863.

It is an arithmetic number, because the mean of its divisors is an integer number (1909220292).

Almost surely, 2^7630640663 is an apocalyptic number.

7630640663 is a deficient number, since it is larger than the sum of its proper divisors (6240505).

7630640663 is a wasteful number, since it uses less digits than its factorization.

7630640663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240504.

The product of its (nonzero) digits is 326592, while the sum is 41.

The square root of 7630640663 is about 87353.5383542075. The cubic root of 7630640663 is about 1968.7338151783.

The spelling of 7630640663 in words is "seven billion, six hundred thirty million, six hundred forty thousand, six hundred sixty-three".