47656766 has 4 divisors (see below), whose sum is σ = 71485152. Its totient is φ = 23828382.

The previous prime is 47656727. The next prime is 47656783. The reversal of 47656766 is 66765674.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66765674 = 2 ⋅33382837.

It is a self number, because there is not a number n which added to its sum of digits gives 47656766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11914190 + ... + 11914193.

It is an arithmetic number, because the mean of its divisors is an integer number (17871288).

Almost surely, 2^47656766 is an apocalyptic number.

47656766 is a deficient number, since it is larger than the sum of its proper divisors (23828386).

47656766 is a wasteful number, since it uses less digits than its factorization.

47656766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23828385.

The product of its digits is 1270080, while the sum is 47.

The square root of 47656766 is about 6903.3880087968. The cubic root of 47656766 is about 362.5557989413. Note that the first 3 decimals are identical.

The spelling of 47656766 in words is "forty-seven million, six hundred fifty-six thousand, seven hundred sixty-six".