1606216523 has 8 divisors (see below), whose sum is σ = 1676505600. Its totient is φ = 1535965288.

The previous prime is 1606216517. The next prime is 1606216541. The reversal of 1606216523 is 3256126061.

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

It is a cyclic number.

It is not a de Polignac number, because 1606216523 - 2⁶ = 1606216459 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 1606216523.

It is not an unprimeable number, because it can be changed into a prime (1606216543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108968 + ... + 122826.

It is an arithmetic number, because the mean of its divisors is an integer number (209563200).

Almost surely, 2^1606216523 is an apocalyptic number.

1606216523 is a deficient number, since it is larger than the sum of its proper divisors (70289077).

1606216523 is a wasteful number, since it uses less digits than its factorization.

1606216523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18921.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1606216523 is about 40077.6312049502. The cubic root of 1606216523 is about 1171.1199063452.

The spelling of 1606216523 in words is "one billion, six hundred six million, two hundred sixteen thousand, five hundred twenty-three".