75733813 has 4 divisors (see below), whose sum is σ = 75860428. Its totient is φ = 75607200.

The previous prime is 75733811. The next prime is 75733841. The reversal of 75733813 is 31833757.

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 30669444 + 45064369 = 5538^2 + 6713^2 .

It is a cyclic number.

It is not a de Polignac number, because 75733813 - 2¹ = 75733811 is a prime.

It is a super-2 number, since 2×75733813² = 11471220863037938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75733811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62406 + ... + 63607.

It is an arithmetic number, because the mean of its divisors is an integer number (18965107).

Almost surely, 2^75733813 is an apocalyptic number.

It is an amenable number.

75733813 is a deficient number, since it is larger than the sum of its proper divisors (126615).

75733813 is a wasteful number, since it uses less digits than its factorization.

75733813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126614.

The product of its digits is 52920, while the sum is 37.

The square root of 75733813 is about 8702.5176242281. The cubic root of 75733813 is about 423.0872531159.

The spelling of 75733813 in words is "seventy-five million, seven hundred thirty-three thousand, eight hundred thirteen".