83680874 has 4 divisors (see below), whose sum is σ = 125521314. Its totient is φ = 41840436.

The previous prime is 83680871. The next prime is 83680879. The reversal of 83680874 is 47808638.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47808638 = 2 ⋅23904319.

It can be written as a sum of positive squares in only one way, i.e., 72505225 + 11175649 = 8515^2 + 3343^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83680871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20920217 + ... + 20920220.

Almost surely, 2^83680874 is an apocalyptic number.

83680874 is a deficient number, since it is larger than the sum of its proper divisors (41840440).

83680874 is a wasteful number, since it uses less digits than its factorization.

83680874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41840439.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 83680874 is about 9147.7250723882. The cubic root of 83680874 is about 437.3965996728.

The spelling of 83680874 in words is "eighty-three million, six hundred eighty thousand, eight hundred seventy-four".