9887068621 has 8 divisors (see below), whose sum is σ = 9935156088. Its totient is φ = 9839040000.

The previous prime is 9887068591. The next prime is 9887068657. The reversal of 9887068621 is 1268607889.

It can be written as a sum of positive squares in 4 ways, for example, as 1849946121 + 8037122500 = 43011^2 + 89650^2 .

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 9887068621 - 2²¹ = 9884971469 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 (9887068691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343071 + ... + 370771.

It is an arithmetic number, because the mean of its divisors is an integer number (1241894511).

Almost surely, 2^9887068621 is an apocalyptic number.

It is an amenable number.

9887068621 is a deficient number, since it is larger than the sum of its proper divisors (48087467).

9887068621 is a wasteful number, since it uses less digits than its factorization.

9887068621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29423.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The square root of 9887068621 is about 99433.7398522252. The cubic root of 9887068621 is about 2146.2938581584.

The spelling of 9887068621 in words is "nine billion, eight hundred eighty-seven million, sixty-eight thousand, six hundred twenty-one".