8858631621 has 16 divisors (see below), whose sum is σ = 13500837504. Its totient is φ = 5061336384.

The previous prime is 8858631619. The next prime is 8858631623. The reversal of 8858631621 is 1261368588.

It is an interprime number because it is at equal distance from previous prime (8858631619) and next prime (8858631623).

It is not a de Polignac number, because 8858631621 - 2¹ = 8858631619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8858631623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138055 + ... + 191771.

It is an arithmetic number, because the mean of its divisors is an integer number (843802344).

Almost surely, 2^8858631621 is an apocalyptic number.

It is an amenable number.

8858631621 is a deficient number, since it is larger than the sum of its proper divisors (4642205883).

8858631621 is a wasteful number, since it uses less digits than its factorization.

8858631621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61580.

The product of its digits is 552960, while the sum is 48.

The square root of 8858631621 is about 94120.3039784721. The cubic root of 8858631621 is about 2069.1352562037.

The spelling of 8858631621 in words is "eight billion, eight hundred fifty-eight million, six hundred thirty-one thousand, six hundred twenty-one".