66732226 has 24 divisors (see below), whose sum is σ = 110502252. Its totient is φ = 30201600.

The previous prime is 66732221. The next prime is 66732229. The reversal of 66732226 is 62223766.

It can be written as a sum of positive squares in 2 ways, for example, as 49716601 + 17015625 = 7051^2 + 4125^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66732191 and 66732200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66732221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75306 + ... + 76186.

Almost surely, 2^66732226 is an apocalyptic number.

66732226 is a deficient number, since it is larger than the sum of its proper divisors (43770026).

66732226 is a wasteful number, since it uses less digits than its factorization.

66732226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1207 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 66732226 is about 8168.9794956286. The cubic root of 66732226 is about 405.6130045289.

The spelling of 66732226 in words is "sixty-six million, seven hundred thirty-two thousand, two hundred twenty-six".