75751813 has 12 divisors (see below), whose sum is σ = 81808132. Its totient is φ = 70110720.

The previous prime is 75751789. The next prime is 75751829. The reversal of 75751813 is 31815757.

It can be written as a sum of positive squares in 6 ways, for example, as 9604 + 75742209 = 98^2 + 8703^2 .

It is not a de Polignac number, because 75751813 - 2⁹ = 75751301 is a prime.

It is a super-3 number, since 3×75751813³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75754813) 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 11 ways as a sum of consecutive naturals, for example, 15481 + ... + 19777.

Almost surely, 2^75751813 is an apocalyptic number.

It is an amenable number.

75751813 is a deficient number, since it is larger than the sum of its proper divisors (6056319).

75751813 is a wasteful number, since it uses less digits than its factorization.

75751813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392 (or 4375 counting only the distinct ones).

The product of its digits is 29400, while the sum is 37.

The square root of 75751813 is about 8703.5517462700. The cubic root of 75751813 is about 423.1207694850.

The spelling of 75751813 in words is "seventy-five million, seven hundred fifty-one thousand, eight hundred thirteen".