76318813 has 4 divisors (see below), whose sum is σ = 76365180. Its totient is φ = 76272448.

The previous prime is 76318793. The next prime is 76318817. The reversal of 76318813 is 31881367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31881367 = 7 ⋅4554481.

It can be written as a sum of positive squares in 2 ways, for example, as 26234884 + 50083929 = 5122^2 + 7077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76318813 is a prime.

It is a super-3 number, since 3×76318813³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76318817) 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, 20620 + ... + 24037.

It is an arithmetic number, because the mean of its divisors is an integer number (19091295).

Almost surely, 2^76318813 is an apocalyptic number.

It is an amenable number.

76318813 is a deficient number, since it is larger than the sum of its proper divisors (46367).

76318813 is a wasteful number, since it uses less digits than its factorization.

76318813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46366.

The product of its digits is 24192, while the sum is 37.

The square root of 76318813 is about 8736.0639306269. The cubic root of 76318813 is about 424.1738284672.

The spelling of 76318813 in words is "seventy-six million, three hundred eighteen thousand, eight hundred thirteen".