66152223 has 12 divisors (see below), whose sum is σ = 95662528. Its totient is φ = 44051040.

The previous prime is 66152221. The next prime is 66152227. The reversal of 66152223 is 32225166.

66152223 is a `hidden beast` number, since 6 + 615 + 22 + 23 = 666.

It is not a de Polignac number, because 66152223 - 2¹ = 66152221 is a prime.

It is a super-2 number, since 2×66152223² = 8752233215683458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66152221) 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 11 ways as a sum of consecutive naturals, for example, 5211 + ... + 12627.

Almost surely, 2^66152223 is an apocalyptic number.

66152223 is a deficient number, since it is larger than the sum of its proper divisors (29510305).

66152223 is a wasteful number, since it uses less digits than its factorization.

66152223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8414 (or 8411 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 66152223 is about 8133.4016868712. The cubic root of 66152223 is about 404.4344552644.

Adding to 66152223 its reverse (32225166), we get a palindrome (98377389).

The spelling of 66152223 in words is "sixty-six million, one hundred fifty-two thousand, two hundred twenty-three".