76636380 has 48 divisors (see below), whose sum is σ = 219822624. Its totient is φ = 19937280.

The previous prime is 76636379. The next prime is 76636381. The reversal of 76636380 is 8363667.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (76636379) and next prime (76636381).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76636381) 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 15 ways as a sum of consecutive naturals, for example, 13117 + ... + 18036.

It is an arithmetic number, because the mean of its divisors is an integer number (4579638).

Almost surely, 2^76636380 is an apocalyptic number.

It is an amenable number.

76636380 is an abundant number, since it is smaller than the sum of its proper divisors (143186244).

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

76636380 is a wasteful number, since it uses less digits than its factorization.

76636380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31206 (or 31204 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 76636380 is about 8754.2206963270. The cubic root of 76636380 is about 424.7613516004.

The spelling of 76636380 in words is "seventy-six million, six hundred thirty-six thousand, three hundred eighty".