76666742 has 8 divisors (see below), whose sum is σ = 115176600. Its totient is φ = 38274544.

The previous prime is 76666739. The next prime is 76666817. The reversal of 76666742 is 24766667.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 76666693 and 76666702.

It is a congruent number.

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, 27767 + ... + 30402.

It is an arithmetic number, because the mean of its divisors is an integer number (14397075).

Almost surely, 2^76666742 is an apocalyptic number.

76666742 is a deficient number, since it is larger than the sum of its proper divisors (38509858).

76666742 is a wasteful number, since it uses less digits than its factorization.

76666742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58830.

The product of its digits is 508032, while the sum is 44.

The square root of 76666742 is about 8755.9546595446. The cubic root of 76666742 is about 424.8174385458.

The spelling of 76666742 in words is "seventy-six million, six hundred sixty-six thousand, seven hundred forty-two".