66522010 has 16 divisors (see below), whose sum is σ = 121183776. Its totient is φ = 26287888.

The previous prime is 66521977. The next prime is 66522011. The reversal of 66522010 is 1022566.

It is not an unprimeable number, because it can be changed into a prime (66522011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39244 + ... + 40903.

It is an arithmetic number, because the mean of its divisors is an integer number (7573986).

Almost surely, 2^66522010 is an apocalyptic number.

66522010 is a deficient number, since it is larger than the sum of its proper divisors (54661766).

66522010 is a wasteful number, since it uses less digits than its factorization.

66522010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80237.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 66522010 is about 8156.1026231896. The cubic root of 66522010 is about 405.1866436375.

Adding to 66522010 its reverse (1022566), we get a palindrome (67544576).

The spelling of 66522010 in words is "sixty-six million, five hundred twenty-two thousand, ten".