66871010 has 32 divisors (see below), whose sum is σ = 122314752. Its totient is φ = 26320320.

The previous prime is 66871009. The next prime is 66871019. The reversal of 66871010 is 1017866.

It is not an unprimeable number, because it can be changed into a prime (66871019) 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 in 15 ways as a sum of consecutive naturals, for example, 299759 + ... + 299981.

It is an arithmetic number, because the mean of its divisors is an integer number (3822336).

Almost surely, 2^66871010 is an apocalyptic number.

66871010 is a deficient number, since it is larger than the sum of its proper divisors (55443742).

66871010 is a wasteful number, since it uses less digits than its factorization.

66871010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 66871010 is about 8177.4696575408. The cubic root of 66871010 is about 405.8939962848.

Adding to 66871010 its reverse (1017866), we get a palindrome (67888876).

The spelling of 66871010 in words is "sixty-six million, eight hundred seventy-one thousand, ten".