83720698 has 16 divisors (see below), whose sum is σ = 127702440. Its totient is φ = 41158656.

The previous prime is 83720687. The next prime is 83720701. The reversal of 83720698 is 89602738.

It can be written as a sum of positive squares in 4 ways, for example, as 69605649 + 14115049 = 8343^2 + 3757^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33136 + ... + 35572.

Almost surely, 2^83720698 is an apocalyptic number.

83720698 is a deficient number, since it is larger than the sum of its proper divisors (43981742).

83720698 is a wasteful number, since it uses less digits than its factorization.

83720698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 83720698 is about 9149.9015295248. The cubic root of 83720698 is about 437.4659748233.

The spelling of 83720698 in words is "eighty-three million, seven hundred twenty thousand, six hundred ninety-eight".