76868648 has 8 divisors (see below), whose sum is σ = 144128730. Its totient is φ = 38434320.

The previous prime is 76868581. The next prime is 76868657. The reversal of 76868648 is 84686867.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74684164 + 2184484 = 8642^2 + 1478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 76868648.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4804283 + ... + 4804298.

Almost surely, 2^76868648 is an apocalyptic number.

It is an amenable number.

76868648 is a deficient number, since it is larger than the sum of its proper divisors (67260082).

76868648 is a wasteful number, since it uses less digits than its factorization.

76868648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9608587 (or 9608583 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The square root of 76868648 is about 8767.4767179617. The cubic root of 76868648 is about 425.1900381954.

The spelling of 76868648 in words is "seventy-six million, eight hundred sixty-eight thousand, six hundred forty-eight".