8421631698 has 16 divisors (see below), whose sum is σ = 16845887520. Its totient is φ = 2806773216.

The previous prime is 8421631693. The next prime is 8421631703. The reversal of 8421631698 is 8961361248.

It is an interprime number because it is at equal distance from previous prime (8421631693) and next prime (8421631703).

It is not an unprimeable number, because it can be changed into a prime (8421631693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66315 + ... + 145742.

It is an arithmetic number, because the mean of its divisors is an integer number (1052867970).

Almost surely, 2^8421631698 is an apocalyptic number.

8421631698 is an abundant number, since it is smaller than the sum of its proper divisors (8424255822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8421631698 is a wasteful number, since it uses less digits than its factorization.

8421631698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218681.

The product of its digits is 497664, while the sum is 48.

The square root of 8421631698 is about 91769.4486090006. The cubic root of 8421631698 is about 2034.5361686194.

The spelling of 8421631698 in words is "eight billion, four hundred twenty-one million, six hundred thirty-one thousand, six hundred ninety-eight".