75807313 has 4 divisors (see below), whose sum is σ = 75825828. Its totient is φ = 75788800.

The previous prime is 75807311. The next prime is 75807317. The reversal of 75807313 is 31370857.

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 35141184 + 40666129 = 5928^2 + 6377^2 .

It is a cyclic number.

It is not a de Polignac number, because 75807313 - 2¹ = 75807311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75807311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88 + ... + 12313.

It is an arithmetic number, because the mean of its divisors is an integer number (18956457).

Almost surely, 2^75807313 is an apocalyptic number.

It is an amenable number.

75807313 is a deficient number, since it is larger than the sum of its proper divisors (18515).

75807313 is a wasteful number, since it uses less digits than its factorization.

75807313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18514.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 75807313 is about 8706.7395160301. The cubic root of 75807313 is about 423.2240782115.

The spelling of 75807313 in words is "seventy-five million, eight hundred seven thousand, three hundred thirteen".