66152212 has 24 divisors (see below), whose sum is σ = 132693120. Its totient is φ = 28267680.

The previous prime is 66152201. The next prime is 66152221. The reversal of 66152212 is 21225166.

It is a super-2 number, since 2×66152212² = 8752230304985888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6762 + ... + 13342.

It is an arithmetic number, because the mean of its divisors is an integer number (5528880).

Almost surely, 2^66152212 is an apocalyptic number.

It is an amenable number.

66152212 is an abundant number, since it is smaller than the sum of its proper divisors (66540908).

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

66152212 is a wasteful number, since it uses less digits than its factorization.

66152212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951 (or 6949 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 66152212 is about 8133.4010106474. The cubic root of 66152212 is about 404.4344328476.

Adding to 66152212 its reverse (21225166), we get a palindrome (87377378).

The spelling of 66152212 in words is "sixty-six million, one hundred fifty-two thousand, two hundred twelve".