1662004411 has 4 divisors (see below), whose sum is σ = 1663364592. Its totient is φ = 1660644232.

The previous prime is 1662004397. The next prime is 1662004427. The reversal of 1662004411 is 1144002661.

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

It is a cyclic number.

It is not a de Polignac number, because 1662004411 - 2²⁷ = 1527786683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662004441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678256 + ... + 680701.

It is an arithmetic number, because the mean of its divisors is an integer number (415841148).

Almost surely, 2^1662004411 is an apocalyptic number.

1662004411 is a deficient number, since it is larger than the sum of its proper divisors (1360181).

1662004411 is a wasteful number, since it uses less digits than its factorization.

1662004411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360180.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1662004411 is about 40767.6883205315. The cubic root of 1662004411 is about 1184.5245259625.

The spelling of 1662004411 in words is "one billion, six hundred sixty-two million, four thousand, four hundred eleven".