83875013 has 4 divisors (see below), whose sum is σ = 84091020. Its totient is φ = 83659008.

The previous prime is 83875009. The next prime is 83875021. The reversal of 83875013 is 31057838.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8567329 + 75307684 = 2927^2 + 8678^2 .

It is a cyclic number.

It is not a de Polignac number, because 83875013 - 2² = 83875009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83875003) 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 in 3 ways as a sum of consecutive naturals, for example, 107420 + ... + 108197.

It is an arithmetic number, because the mean of its divisors is an integer number (21022755).

Almost surely, 2^83875013 is an apocalyptic number.

It is an amenable number.

83875013 is a deficient number, since it is larger than the sum of its proper divisors (216007).

83875013 is a wasteful number, since it uses less digits than its factorization.

83875013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216006.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 83875013 is about 9158.3302517435. The cubic root of 83875013 is about 437.7345907053.

The spelling of 83875013 in words is "eighty-three million, eight hundred seventy-five thousand, thirteen".