76865511 has 4 divisors (see below), whose sum is σ = 102487352. Its totient is φ = 51243672.

The previous prime is 76865491. The next prime is 76865513. The reversal of 76865511 is 11556867.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 76865511 - 2⁵ = 76865479 is a prime.

It is a super-2 number, since 2×76865511² = 11816613562582242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76865511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76865513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12810916 + ... + 12810921.

It is an arithmetic number, because the mean of its divisors is an integer number (25621838).

Almost surely, 2^76865511 is an apocalyptic number.

76865511 is a deficient number, since it is larger than the sum of its proper divisors (25621841).

76865511 is a wasteful number, since it uses less digits than its factorization.

76865511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25621840.

The product of its digits is 50400, while the sum is 39.

The square root of 76865511 is about 8767.2978163172. The cubic root of 76865511 is about 425.1842541325.

The spelling of 76865511 in words is "seventy-six million, eight hundred sixty-five thousand, five hundred eleven".