76836321 has 12 divisors (see below), whose sum is σ = 114566400. Its totient is φ = 49571640.

The previous prime is 76836317. The next prime is 76836329. The reversal of 76836321 is 12363867.

It is a happy number.

It is not a de Polignac number, because 76836321 - 2² = 76836317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76836329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137421 + ... + 137978.

It is an arithmetic number, because the mean of its divisors is an integer number (9547200).

Almost surely, 2^76836321 is an apocalyptic number.

It is an amenable number.

76836321 is a deficient number, since it is larger than the sum of its proper divisors (37730079).

76836321 is a wasteful number, since it uses less digits than its factorization.

76836321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275436 (or 275433 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 76836321 is about 8765.6329491943. The cubic root of 76836321 is about 425.1304254837.

The spelling of 76836321 in words is "seventy-six million, eight hundred thirty-six thousand, three hundred twenty-one".