66467856 has 80 divisors (see below), whose sum is σ = 211347584. Its totient is φ = 17528832.

The previous prime is 66467851. The next prime is 66467881. The reversal of 66467856 is 65876466.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (66467851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3241 + ... + 11976.

Almost surely, 2^66467856 is an apocalyptic number.

It is an amenable number.

66467856 is an abundant number, since it is smaller than the sum of its proper divisors (144879728).

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

66467856 is a wasteful number, since it uses less digits than its factorization.

66467856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15248 (or 15242 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 66467856 is about 8152.7821018349. The cubic root of 66467856 is about 405.0766628233.

The spelling of 66467856 in words is "sixty-six million, four hundred sixty-seven thousand, eight hundred fifty-six".