76773812 has 12 divisors (see below), whose sum is σ = 137631396. Its totient is φ = 37450560.

The previous prime is 76773811. The next prime is 76773833. The reversal of 76773812 is 21837767.

It can be written as a sum of positive squares in 2 ways, for example, as 2572816 + 74200996 = 1604^2 + 8614^2 .

It is a super-2 number, since 2×76773812² = 11788436418022688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 76773812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76773811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233903 + ... + 234230.

It is an arithmetic number, because the mean of its divisors is an integer number (11469283).

Almost surely, 2^76773812 is an apocalyptic number.

It is an amenable number.

76773812 is a deficient number, since it is larger than the sum of its proper divisors (60857584).

76773812 is a wasteful number, since it uses less digits than its factorization.

76773812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468178 (or 468176 counting only the distinct ones).

The product of its digits is 98784, while the sum is 41.

The square root of 76773812 is about 8762.0666511959. The cubic root of 76773812 is about 425.0151081134.

The spelling of 76773812 in words is "seventy-six million, seven hundred seventy-three thousand, eight hundred twelve".