2171066074 has 4 divisors (see below), whose sum is σ = 3256599114. Its totient is φ = 1085533036.

The previous prime is 2171066047. The next prime is 2171066077. The reversal of 2171066074 is 4706601712.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2001936049 + 169130025 = 44743^2 + 13005^2 .

It is not an unprimeable number, because it can be changed into a prime (2171066077) 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, 542766517 + ... + 542766520.

Almost surely, 2^2171066074 is an apocalyptic number.

2171066074 is a deficient number, since it is larger than the sum of its proper divisors (1085533040).

2171066074 is a wasteful number, since it uses less digits than its factorization.

2171066074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085533039.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 2171066074 is about 46594.7000634192. The cubic root of 2171066074 is about 1294.8645672632.

Adding to 2171066074 its reverse (4706601712), we get a palindrome (6877667786).

The spelling of 2171066074 in words is "two billion, one hundred seventy-one million, sixty-six thousand, seventy-four".