83375815 has 4 divisors (see below), whose sum is σ = 100050984. Its totient is φ = 66700648.

The previous prime is 83375801. The next prime is 83375843. The reversal of 83375815 is 51857338.

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 83375815 - 2⁷ = 83375687 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8337577 + ... + 8337586.

It is an arithmetic number, because the mean of its divisors is an integer number (25012746).

Almost surely, 2^83375815 is an apocalyptic number.

83375815 is a deficient number, since it is larger than the sum of its proper divisors (16675169).

83375815 is a wasteful number, since it uses less digits than its factorization.

83375815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16675168.

The product of its digits is 100800, while the sum is 40.

The square root of 83375815 is about 9131.0358119985. The cubic root of 83375815 is about 436.8644420676.

The spelling of 83375815 in words is "eighty-three million, three hundred seventy-five thousand, eight hundred fifteen".