66941228 has 6 divisors (see below), whose sum is σ = 117147156. Its totient is φ = 33470612.

The previous prime is 66941197. The next prime is 66941269. The reversal of 66941228 is 82214966.

It is a super-2 number, since 2×66941228² = 8962256012295968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66941191 and 66941200.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8367650 + ... + 8367657.

It is an arithmetic number, because the mean of its divisors is an integer number (19524526).

Almost surely, 2^66941228 is an apocalyptic number.

It is an amenable number.

66941228 is a deficient number, since it is larger than the sum of its proper divisors (50205928).

66941228 is a wasteful number, since it uses less digits than its factorization.

66941228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16735311 (or 16735309 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 66941228 is about 8181.7619129378. The cubic root of 66941228 is about 406.0360164446.

The spelling of 66941228 in words is "sixty-six million, nine hundred forty-one thousand, two hundred twenty-eight".