47445666 has 16 divisors (see below), whose sum is σ = 94975104. Its totient is φ = 15801264.

The previous prime is 47445631. The next prime is 47445667. The reversal of 47445666 is 66654474.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47445667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5760 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (5935944).

Almost surely, 2^47445666 is an apocalyptic number.

47445666 is an abundant number, since it is smaller than the sum of its proper divisors (47529438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47445666 is a wasteful number, since it uses less digits than its factorization.

47445666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985.

The product of its digits is 483840, while the sum is 42.

The square root of 47445666 is about 6888.0814455115. The cubic root of 47445666 is about 362.0196818862.

The spelling of 47445666 in words is "forty-seven million, four hundred forty-five thousand, six hundred sixty-six".