75799985 has 4 divisors (see below), whose sum is σ = 90959988. Its totient is φ = 60639984.

The previous prime is 75799967. The next prime is 75800009. The reversal of 75799985 is 58999757.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58999757 = 331 ⋅178247.

It can be written as a sum of positive squares in 2 ways, for example, as 22202944 + 53597041 = 4712^2 + 7321^2 .

It is a cyclic number.

It is not a de Polignac number, because 75799985 - 2⁶ = 75799921 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, 7579994 + ... + 7580003.

It is an arithmetic number, because the mean of its divisors is an integer number (22739997).

Almost surely, 2^75799985 is an apocalyptic number.

It is an amenable number.

75799985 is a deficient number, since it is larger than the sum of its proper divisors (15160003).

75799985 is a wasteful number, since it uses less digits than its factorization.

75799985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15160002.

The product of its digits is 7144200, while the sum is 59.

The square root of 75799985 is about 8706.3186824283. The cubic root of 75799985 is about 423.2104406267.

The spelling of 75799985 in words is "seventy-five million, seven hundred ninety-nine thousand, nine hundred eighty-five".