75899905 has 8 divisors (see below), whose sum is σ = 91326312. Its totient is φ = 60555648.

The previous prime is 75899891. The next prime is 75899911. The reversal of 75899905 is 50999857.

It can be written as a sum of positive squares in 4 ways, for example, as 961 + 75898944 = 31^2 + 8712^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75899905 - 2⁷ = 75899777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18484 + ... + 22213.

It is an arithmetic number, because the mean of its divisors is an integer number (11415789).

Almost surely, 2^75899905 is an apocalyptic number.

It is an amenable number.

75899905 is a deficient number, since it is larger than the sum of its proper divisors (15426407).

75899905 is a wasteful number, since it uses less digits than its factorization.

75899905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41075.

The product of its (nonzero) digits is 1020600, while the sum is 52.

The square root of 75899905 is about 8712.0551536363. The cubic root of 75899905 is about 423.3963184988.

The spelling of 75899905 in words is "seventy-five million, eight hundred ninety-nine thousand, nine hundred five".