9721610487 has 6 divisors (see below), whose sum is σ = 14042326272. Its totient is φ = 6481073652.

The previous prime is 9721610453. The next prime is 9721610539. The reversal of 9721610487 is 7840161279.

It is a happy number.

9721610487 is a `hidden beast` number, since 9 + 7 + 2 + 161 + 0 + 487 = 666.

It is not a de Polignac number, because 9721610487 - 2⁷ = 9721610359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9721610407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 540089463 + ... + 540089480.

It is an arithmetic number, because the mean of its divisors is an integer number (2340387712).

Almost surely, 2^9721610487 is an apocalyptic number.

9721610487 is a deficient number, since it is larger than the sum of its proper divisors (4320715785).

9721610487 is a wasteful number, since it uses less digits than its factorization.

9721610487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080178949 (or 1080178946 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 9721610487 is about 98598.2276057739. The cubic root of 9721610487 is about 2134.2538430661.

The spelling of 9721610487 in words is "nine billion, seven hundred twenty-one million, six hundred ten thousand, four hundred eighty-seven".