66532412 has 24 divisors (see below), whose sum is σ = 119253120. Its totient is φ = 32468400.

The previous prime is 66532391. The next prime is 66532421. The reversal of 66532412 is 21423566.

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, 34703 + ... + 36569.

It is an arithmetic number, because the mean of its divisors is an integer number (4968880).

Almost surely, 2^66532412 is an apocalyptic number.

It is an amenable number.

66532412 is a deficient number, since it is larger than the sum of its proper divisors (52720708).

66532412 is a wasteful number, since it uses less digits than its factorization.

66532412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081 (or 2079 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 66532412 is about 8156.7402802835. The cubic root of 66532412 is about 405.2077621205.

Adding to 66532412 its reverse (21423566), we get a palindrome (87955978).

The spelling of 66532412 in words is "sixty-six million, five hundred thirty-two thousand, four hundred twelve".