66214432 has 24 divisors (see below), whose sum is σ = 130555152. Its totient is φ = 33057600.

The previous prime is 66214409. The next prime is 66214441. The reversal of 66214432 is 23441266.

It is a self number, because there is not a number n which added to its sum of digits gives 66214432.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30007 + ... + 32137.

It is an arithmetic number, because the mean of its divisors is an integer number (5439798).

Almost surely, 2^66214432 is an apocalyptic number.

It is an amenable number.

66214432 is a deficient number, since it is larger than the sum of its proper divisors (64340720).

66214432 is a wasteful number, since it uses less digits than its factorization.

66214432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112 (or 3104 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 66214432 is about 8137.2250798414. The cubic root of 66214432 is about 404.5611911443.

Adding to 66214432 its reverse (23441266), we get a palindrome (89655698).

The spelling of 66214432 in words is "sixty-six million, two hundred fourteen thousand, four hundred thirty-two".