75799865 has 8 divisors (see below), whose sum is σ = 93418440. Its totient is φ = 59000832.

The previous prime is 75799859. The next prime is 75799891. The reversal of 75799865 is 56899757.

It can be written as a sum of positive squares in 4 ways, for example, as 23193856 + 52606009 = 4816^2 + 7253^2 .

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 75799865 - 2⁴ = 75799849 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 75799865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204680 + ... + 205049.

It is an arithmetic number, because the mean of its divisors is an integer number (11677305).

Almost surely, 2^75799865 is an apocalyptic number.

It is an amenable number.

75799865 is a deficient number, since it is larger than the sum of its proper divisors (17618575).

75799865 is a wasteful number, since it uses less digits than its factorization.

75799865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409771.

The product of its digits is 4762800, while the sum is 56.

The square root of 75799865 is about 8706.3117908791. The cubic root of 75799865 is about 423.2102172965.

The spelling of 75799865 in words is "seventy-five million, seven hundred ninety-nine thousand, eight hundred sixty-five".