83775005 has 4 divisors (see below), whose sum is σ = 100530012. Its totient is φ = 67020000.

The previous prime is 83775001. The next prime is 83775011. The reversal of 83775005 is 50057738.

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 44662489 + 39112516 = 6683^2 + 6254^2 .

It is not a de Polignac number, because 83775005 - 2² = 83775001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83775001) 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, 8377496 + ... + 8377505.

It is an arithmetic number, because the mean of its divisors is an integer number (25132503).

Almost surely, 2^83775005 is an apocalyptic number.

It is an amenable number.

83775005 is a deficient number, since it is larger than the sum of its proper divisors (16755007).

83775005 is a wasteful number, since it uses less digits than its factorization.

83775005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755006.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 83775005 is about 9152.8686759944. The cubic root of 83775005 is about 437.5605445462.

The spelling of 83775005 in words is "eighty-three million, seven hundred seventy-five thousand, five".