66871468 has 6 divisors (see below), whose sum is σ = 117025076. Its totient is φ = 33435732.

The previous prime is 66871463. The next prime is 66871499. The reversal of 66871468 is 86417866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66871463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8358930 + ... + 8358937.

Almost surely, 2^66871468 is an apocalyptic number.

It is an amenable number.

66871468 is a deficient number, since it is larger than the sum of its proper divisors (50153608).

66871468 is a wasteful number, since it uses less digits than its factorization.

66871468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16717871 (or 16717869 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 66871468 is about 8177.4976612653. The cubic root of 66871468 is about 405.8949229396.

The spelling of 66871468 in words is "sixty-six million, eight hundred seventy-one thousand, four hundred sixty-eight".