83680799 has 4 divisors (see below), whose sum is σ = 85259736. Its totient is φ = 82101864.

The previous prime is 83680787. The next prime is 83680801. The reversal of 83680799 is 99708638.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83680799 - 2⁸ = 83680543 is a prime.

It is a super-2 number, since 2×83680799² = 14004952242556802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83680759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789389 + ... + 789494.

It is an arithmetic number, because the mean of its divisors is an integer number (21314934).

Almost surely, 2^83680799 is an apocalyptic number.

83680799 is a deficient number, since it is larger than the sum of its proper divisors (1578937).

83680799 is a wasteful number, since it uses less digits than its factorization.

83680799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578936.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 83680799 is about 9147.7209730074. The cubic root of 83680799 is about 437.3964689987.

The spelling of 83680799 in words is "eighty-three million, six hundred eighty thousand, seven hundred ninety-nine".