1662520606603 has 8 divisors (see below), whose sum is σ = 1701201408368. Its totient is φ = 1623840601824.

The previous prime is 1662520606577. The next prime is 1662520606627. The reversal of 1662520606603 is 3066060252661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1662520606603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

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 1662520606603.

It is not an unprimeable number, because it can be changed into a prime (1662520606673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7072801 + ... + 7304077.

It is an arithmetic number, because the mean of its divisors is an integer number (212650176046).

Almost surely, 2^{1662520606603} is an apocalyptic number.

1662520606603 is a deficient number, since it is larger than the sum of its proper divisors (38680801765).

1662520606603 is a wasteful number, since it uses less digits than its factorization.

1662520606603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398493.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 1662520606603 in words is "one trillion, six hundred sixty-two billion, five hundred twenty million, six hundred six thousand, six hundred three".