83987698 has 8 divisors (see below), whose sum is σ = 127397340. Its totient is φ = 41521920.

The previous prime is 83987693. The next prime is 83987723. The reversal of 83987698 is 89678938.

It can be written as a sum of positive squares in 2 ways, for example, as 62615569 + 21372129 = 7913^2 + 4623^2 .

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

It is not an unprimeable number, because it can be changed into a prime (83987693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235743 + ... + 236098.

Almost surely, 2^83987698 is an apocalyptic number.

83987698 is a deficient number, since it is larger than the sum of its proper divisors (43409642).

83987698 is a wasteful number, since it uses less digits than its factorization.

83987698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471932.

The product of its digits is 5225472, while the sum is 58.

The square root of 83987698 is about 9164.4802362163. The cubic root of 83987698 is about 437.9305332448.

The spelling of 83987698 in words is "eighty-three million, nine hundred eighty-seven thousand, six hundred ninety-eight".