76704476643 has 24 divisors (see below), whose sum is σ = 112346030160. Its totient is φ = 50422993920.

The previous prime is 76704476633. The next prime is 76704476647. The reversal of 76704476643 is 34667440767.

76704476643 is a `hidden beast` number, since 76 + 70 + 447 + 6 + 64 + 3 = 666.

It is not a de Polignac number, because 76704476643 - 2¹⁰ = 76704475619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76704476643.

It is not an unprimeable number, because it can be changed into a prime (76704476647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290643 + ... + 487731.

It is an arithmetic number, because the mean of its divisors is an integer number (4681084590).

Almost surely, 2^76704476643 is an apocalyptic number.

76704476643 is a deficient number, since it is larger than the sum of its proper divisors (35641553517).

76704476643 is a wasteful number, since it uses less digits than its factorization.

76704476643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197699 (or 197696 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 54.

The spelling of 76704476643 in words is "seventy-six billion, seven hundred four million, four hundred seventy-six thousand, six hundred forty-three".