66476828 has 24 divisors (see below), whose sum is σ = 127162224. Its totient is φ = 30156800.

The previous prime is 66476821. The next prime is 66476833. The reversal of 66476828 is 82867466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66476821) 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, 27026 + ... + 29382.

It is an arithmetic number, because the mean of its divisors is an integer number (5298426).

Almost surely, 2^66476828 is an apocalyptic number.

It is an amenable number.

66476828 is a deficient number, since it is larger than the sum of its proper divisors (60685396).

66476828 is a wasteful number, since it uses less digits than its factorization.

66476828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 3011 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 66476828 is about 8153.3323248841. The cubic root of 66476828 is about 405.0948880955.

The spelling of 66476828 in words is "sixty-six million, four hundred seventy-six thousand, eight hundred twenty-eight".