6658861630 has 32 divisors (see below), whose sum is σ = 12137558400. Its totient is φ = 2629938432.

The previous prime is 6658861613. The next prime is 6658861661. The reversal of 6658861630 is 361688566.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 683131 + ... + 692809.

It is an arithmetic number, because the mean of its divisors is an integer number (379298700).

Almost surely, 2^6658861630 is an apocalyptic number.

6658861630 is a deficient number, since it is larger than the sum of its proper divisors (5478696770).

6658861630 is a wasteful number, since it uses less digits than its factorization.

6658861630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10548.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 6658861630 is about 81601.8482021088. The cubic root of 6658861630 is about 1881.3372888715.

The spelling of 6658861630 in words is "six billion, six hundred fifty-eight million, eight hundred sixty-one thousand, six hundred thirty".