76755780 has 36 divisors (see below), whose sum is σ = 232826412. Its totient is φ = 20468160.

The previous prime is 76755773. The next prime is 76755781. The reversal of 76755780 is 8755767.

76755780 is a `hidden beast` number, since 7 + 6 + 75 + 578 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12787776 + 63968004 = 3576^2 + 7998^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (76755781) 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, 213031 + ... + 213390.

Almost surely, 2^76755780 is an apocalyptic number.

It is an amenable number.

76755780 is an abundant number, since it is smaller than the sum of its proper divisors (156070632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76755780 is a wasteful number, since it uses less digits than its factorization.

76755780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426436 (or 426431 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The square root of 76755780 is about 8761.0376097812. The cubic root of 76755780 is about 424.9818308265.

The spelling of 76755780 in words is "seventy-six million, seven hundred fifty-five thousand, seven hundred eighty".