76660666 has 8 divisors (see below), whose sum is σ = 117437760. Its totient is φ = 37514748.

The previous prime is 76660651. The next prime is 76660699. The reversal of 76660666 is 66606667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407676 + ... + 407863.

It is an arithmetic number, because the mean of its divisors is an integer number (14679720).

Almost surely, 2^76660666 is an apocalyptic number.

76660666 is a deficient number, since it is larger than the sum of its proper divisors (40777094).

76660666 is a wasteful number, since it uses less digits than its factorization.

76660666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815588.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 76660666 is about 8755.6076887901. The cubic root of 76660666 is about 424.8062156918.

The spelling of 76660666 in words is "seventy-six million, six hundred sixty thousand, six hundred sixty-six".