76666668 has 48 divisors (see below), whose sum is σ = 203988960. Its totient is φ = 22201344.

The previous prime is 76666663. The next prime is 76666703. The reversal of 76666668 is 86666667.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 76666668.

It is not an unprimeable number, because it can be changed into a prime (76666663) 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 15 ways as a sum of consecutive naturals, for example, 11803 + ... + 17106.

It is an arithmetic number, because the mean of its divisors is an integer number (4249770).

Almost surely, 2^76666668 is an apocalyptic number.

76666668 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

76666668 is an abundant number, since it is smaller than the sum of its proper divisors (127322292).

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

76666668 is a wasteful number, since it uses less digits than its factorization.

76666668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28946 (or 28944 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 51.

The square root of 76666668 is about 8755.9504338478. The cubic root of 76666668 is about 424.8173018655.

Subtracting 76666668 from its reverse (86666667), we obtain a palindrome (9999999).

The spelling of 76666668 in words is "seventy-six million, six hundred sixty-six thousand, six hundred sixty-eight".