47966661 has 20 divisors (see below), whose sum is σ = 74772192. Its totient is φ = 30586248.

The previous prime is 47966657. The next prime is 47966669. The reversal of 47966661 is 16666974.

It is a happy number.

It is not a de Polignac number, because 47966661 - 2² = 47966657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47966669) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11011 + ... + 14736.

Almost surely, 2^47966661 is an apocalyptic number.

It is an amenable number.

47966661 is a deficient number, since it is larger than the sum of its proper divisors (26805531).

47966661 is a wasteful number, since it uses less digits than its factorization.

47966661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25782 (or 25773 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 47966661 is about 6925.7967772669. The cubic root of 47966661 is about 363.3399588239.

The spelling of 47966661 in words is "forty-seven million, nine hundred sixty-six thousand, six hundred sixty-one".