47306666 has 8 divisors (see below), whose sum is σ = 77410944. Its totient is φ = 21503020.

The previous prime is 47306603. The next prime is 47306669. The reversal of 47306666 is 66660374.

47306666 = 1980² + 1981² + ... + 1991².

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

47306666 is a modest number, since divided by 6666 gives 4730 as remainder.

It is not an unprimeable number, because it can be changed into a prime (47306669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075130 + ... + 1075173.

It is an arithmetic number, because the mean of its divisors is an integer number (9676368).

Almost surely, 2^47306666 is an apocalyptic number.

47306666 is a deficient number, since it is larger than the sum of its proper divisors (30104278).

47306666 is a wasteful number, since it uses less digits than its factorization.

47306666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150316.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 47306666 is about 6877.9841523516. The cubic root of 47306666 is about 361.6658037124.

The spelling of 47306666 in words is "forty-seven million, three hundred six thousand, six hundred sixty-six".