66332522 has 4 divisors (see below), whose sum is σ = 99498786. Its totient is φ = 33166260.

The previous prime is 66332507. The next prime is 66332533. The reversal of 66332522 is 22523366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22523366 = 2 ⋅11261683.

It can be written as a sum of positive squares in only one way, i.e., 65431921 + 900601 = 8089^2 + 949^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16583129 + ... + 16583132.

Almost surely, 2^66332522 is an apocalyptic number.

66332522 is a deficient number, since it is larger than the sum of its proper divisors (33166264).

66332522 is a wasteful number, since it uses less digits than its factorization.

66332522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33166263.

The product of its digits is 12960, while the sum is 29.

The square root of 66332522 is about 8144.4780066005. The cubic root of 66332522 is about 404.8015529332.

Adding to 66332522 its reverse (22523366), we get a palindrome (88855888).

The spelling of 66332522 in words is "sixty-six million, three hundred thirty-two thousand, five hundred twenty-two".