76839668 has 6 divisors (see below), whose sum is σ = 134469426. Its totient is φ = 38419832.

The previous prime is 76839641. The next prime is 76839673. The reversal of 76839668 is 86693867.

It can be written as a sum of positive squares in only one way, i.e., 73068304 + 3771364 = 8548^2 + 1942^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9604955 + ... + 9604962.

It is an arithmetic number, because the mean of its divisors is an integer number (22411571).

Almost surely, 2^76839668 is an apocalyptic number.

It is an amenable number.

76839668 is a deficient number, since it is larger than the sum of its proper divisors (57629758).

76839668 is a wasteful number, since it uses less digits than its factorization.

76839668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19209921 (or 19209919 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 76839668 is about 8765.8238631631. The cubic root of 76839668 is about 425.1365983061.

The spelling of 76839668 in words is "seventy-six million, eight hundred thirty-nine thousand, six hundred sixty-eight".