66658052 has 12 divisors (see below), whose sum is σ = 118250076. Its totient is φ = 32872320.

The previous prime is 66658051. The next prime is 66658073. The reversal of 66658052 is 25085666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27520516 + 39137536 = 5246^2 + 6256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66657997 and 66658015.

It is not an unprimeable number, because it can be changed into a prime (66658051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113849 + ... + 114432.

It is an arithmetic number, because the mean of its divisors is an integer number (9854173).

Almost surely, 2^66658052 is an apocalyptic number.

It is an amenable number.

66658052 is a deficient number, since it is larger than the sum of its proper divisors (51592024).

66658052 is a wasteful number, since it uses less digits than its factorization.

66658052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228358 (or 228356 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 66658052 is about 8164.4382537931. The cubic root of 66658052 is about 405.4626669050.

The spelling of 66658052 in words is "sixty-six million, six hundred fifty-eight thousand, fifty-two".