1662706011 has 16 divisors (see below), whose sum is σ = 2227077248. Its totient is φ = 1103414400.

The previous prime is 1662706007. The next prime is 1662706021. The reversal of 1662706011 is 1106072661.

It is not a de Polignac number, because 1662706011 - 2² = 1662706007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1662706011.

It is not an unprimeable number, because it can be changed into a prime (1662706021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281315 + ... + 1282611.

It is an arithmetic number, because the mean of its divisors is an integer number (139192328).

Almost surely, 2^1662706011 is an apocalyptic number.

1662706011 is a deficient number, since it is larger than the sum of its proper divisors (564371237).

1662706011 is a wasteful number, since it uses less digits than its factorization.

1662706011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1662706011 is about 40776.2922664629. The cubic root of 1662706011 is about 1184.6911812548.

Adding to 1662706011 its reverse (1106072661), we get a palindrome (2768778672).

The spelling of 1662706011 in words is "one billion, six hundred sixty-two million, seven hundred six thousand, eleven".