66502214 has 4 divisors (see below), whose sum is σ = 99753324. Its totient is φ = 33251106.

The previous prime is 66502213. The next prime is 66502231. The reversal of 66502214 is 41220566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41220566 = 2 ⋅20610283.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66502211) 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 as a sum of consecutive naturals, namely, 16625552 + ... + 16625555.

It is an arithmetic number, because the mean of its divisors is an integer number (24938331).

Almost surely, 2^66502214 is an apocalyptic number.

66502214 is a deficient number, since it is larger than the sum of its proper divisors (33251110).

66502214 is a wasteful number, since it uses less digits than its factorization.

66502214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33251109.

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

The square root of 66502214 is about 8154.8889630699. Note that the first 3 decimals coincide. The cubic root of 66502214 is about 405.1464470641.

The spelling of 66502214 in words is "sixty-six million, five hundred two thousand, two hundred fourteen".