1662240636 has 96 divisors (see below), whose sum is σ = 5139348480. Its totient is φ = 454272192.

The previous prime is 1662240623. The next prime is 1662240653. The reversal of 1662240636 is 6360422661.

1662240636 is a `hidden beast` number, since 16 + 6 + 2 + 2 + 4 + 0 + 636 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1662240636.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 30411 + ... + 65186.

It is an arithmetic number, because the mean of its divisors is an integer number (53534880).

Almost surely, 2^1662240636 is an apocalyptic number.

It is an amenable number.

1662240636 is an abundant number, since it is smaller than the sum of its proper divisors (3477107844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1662240636 is a wasteful number, since it uses less digits than its factorization.

1662240636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95640 (or 95632 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 1662240636 is about 40770.5854262604. The cubic root of 1662240636 is about 1184.5806431521.

The spelling of 1662240636 in words is "one billion, six hundred sixty-two million, two hundred forty thousand, six hundred thirty-six".