66278352 has 40 divisors (see below), whose sum is σ = 195679936. Its totient is φ = 18936576.

The previous prime is 66278309. The next prime is 66278353. The reversal of 66278352 is 25387266.

It is a self number, because there is not a number n which added to its sum of digits gives 66278352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66278353) 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, 98293 + ... + 98964.

Almost surely, 2^66278352 is an apocalyptic number.

It is an amenable number.

66278352 is an abundant number, since it is smaller than the sum of its proper divisors (129401584).

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

66278352 is a wasteful number, since it uses less digits than its factorization.

66278352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197275 (or 197269 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 66278352 is about 8141.1517612682. The cubic root of 66278352 is about 404.6913301178.

The spelling of 66278352 in words is "sixty-six million, two hundred seventy-eight thousand, three hundred fifty-two".