8651663477 has 8 divisors (see below), whose sum is σ = 9162639000. Its totient is φ = 8140916224.

The previous prime is 8651663459. The next prime is 8651663513. The reversal of 8651663477 is 7743661568.

8651663477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6612779761 + 2038883716 = 81319^2 + 45154^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8651663477 - 2⁶ = 8651663413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8651663407) 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 7 ways as a sum of consecutive naturals, for example, 24299 + ... + 133767.

It is an arithmetic number, because the mean of its divisors is an integer number (1145329875).

Almost surely, 2^8651663477 is an apocalyptic number.

It is an amenable number.

8651663477 is a deficient number, since it is larger than the sum of its proper divisors (510975523).

8651663477 is a wasteful number, since it uses less digits than its factorization.

8651663477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114135.

The product of its digits is 5080320, while the sum is 53.

The square root of 8651663477 is about 93014.3186665365. The cubic root of 8651663477 is about 2052.8940664441.

The spelling of 8651663477 in words is "eight billion, six hundred fifty-one million, six hundred sixty-three thousand, four hundred seventy-seven".