83159705 has 4 divisors (see below), whose sum is σ = 99791652. Its totient is φ = 66527760.

The previous prime is 83159693. The next prime is 83159719. The reversal of 83159705 is 50795138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50795138 = 2 ⋅25397569.

It can be written as a sum of positive squares in 2 ways, for example, as 58079641 + 25080064 = 7621^2 + 5008^2 .

It is not a de Polignac number, because 83159705 - 2⁴ = 83159689 is a prime.

It is a Duffinian 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, 8315966 + ... + 8315975.

It is an arithmetic number, because the mean of its divisors is an integer number (24947913).

Almost surely, 2^83159705 is an apocalyptic number.

It is an amenable number.

83159705 is a deficient number, since it is larger than the sum of its proper divisors (16631947).

83159705 is a wasteful number, since it uses less digits than its factorization.

83159705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16631946.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 83159705 is about 9119.1943174822. The cubic root of 83159705 is about 436.4866647985.

The spelling of 83159705 in words is "eighty-three million, one hundred fifty-nine thousand, seven hundred five".