66752224 has 48 divisors (see below), whose sum is σ = 163852416. Its totient is φ = 26006400.

The previous prime is 66752221. The next prime is 66752261. The reversal of 66752224 is 42225766.

It is a self number, because there is not a number n which added to its sum of digits gives 66752224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66752221) 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, 11082 + ... + 16009.

It is an arithmetic number, because the mean of its divisors is an integer number (3413592).

Almost surely, 2^66752224 is an apocalyptic number.

It is an amenable number.

66752224 is an abundant number, since it is smaller than the sum of its proper divisors (97100192).

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

66752224 is a wasteful number, since it uses less digits than its factorization.

66752224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27119 (or 27111 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 66752224 is about 8170.2034246400. The cubic root of 66752224 is about 405.6535178822.

The spelling of 66752224 in words is "sixty-six million, seven hundred fifty-two thousand, two hundred twenty-four".