66770236 has 12 divisors (see below), whose sum is σ = 125836312. Its totient is φ = 30817008.

The previous prime is 66770233. The next prime is 66770243. The reversal of 66770236 is 63207766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66770195 and 66770204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66770233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641970 + ... + 642073.

Almost surely, 2^66770236 is an apocalyptic number.

It is an amenable number.

66770236 is a deficient number, since it is larger than the sum of its proper divisors (59066076).

66770236 is a wasteful number, since it uses less digits than its factorization.

66770236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284060 (or 1284058 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 66770236 is about 8171.3056484261. The cubic root of 66770236 is about 405.6900009316.

The spelling of 66770236 in words is "sixty-six million, seven hundred seventy thousand, two hundred thirty-six".