1662071212 has 12 divisors (see below), whose sum is σ = 2911133736. Its totient is φ = 830318720.

The previous prime is 1662071167. The next prime is 1662071221. The reversal of 1662071212 is 2121702661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173989 + ... + 183292.

It is an arithmetic number, because the mean of its divisors is an integer number (242594478).

Almost surely, 2^1662071212 is an apocalyptic number.

It is an amenable number.

1662071212 is a deficient number, since it is larger than the sum of its proper divisors (1249062524).

1662071212 is a wasteful number, since it uses less digits than its factorization.

1662071212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358448 (or 358446 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1662071212 is about 40768.5076008431. The cubic root of 1662071212 is about 1184.5403956281.

Adding to 1662071212 its reverse (2121702661), we get a palindrome (3783773873).

The spelling of 1662071212 in words is "one billion, six hundred sixty-two million, seventy-one thousand, two hundred twelve".