66524012 has 12 divisors (see below), whose sum is σ = 117021576. Its totient is φ = 33089280.

The previous prime is 66524011. The next prime is 66524021. The reversal of 66524012 is 21042566.

It is a super-2 number, since 2×66524012² = 8850888345152288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66524011) 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, 42314 + ... + 43857.

It is an arithmetic number, because the mean of its divisors is an integer number (9751798).

Almost surely, 2^66524012 is an apocalyptic number.

It is an amenable number.

66524012 is a deficient number, since it is larger than the sum of its proper divisors (50497564).

66524012 is a wasteful number, since it uses less digits than its factorization.

66524012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86368 (or 86366 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 66524012 is about 8156.2253524532. The cubic root of 66524012 is about 405.1907083349.

Adding to 66524012 its reverse (21042566), we get a palindrome (87566578).

The spelling of 66524012 in words is "sixty-six million, five hundred twenty-four thousand, twelve".