1606506213 has 8 divisors (see below), whose sum is σ = 2306778208. Its totient is φ = 988619184.

The previous prime is 1606506203. The next prime is 1606506257. The reversal of 1606506213 is 3126056061.

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

It is not a de Polignac number, because 1606506213 - 2¹⁰ = 1606505189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606506203) 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, 20596195 + ... + 20596272.

It is an arithmetic number, because the mean of its divisors is an integer number (288347276).

Almost surely, 2^1606506213 is an apocalyptic number.

1606506213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1606506213 is a deficient number, since it is larger than the sum of its proper divisors (700271995).

1606506213 is a wasteful number, since it uses less digits than its factorization.

1606506213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41192483.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1606506213 is about 40081.2451528143. The cubic root of 1606506213 is about 1171.1903080889.

The spelling of 1606506213 in words is "one billion, six hundred six million, five hundred six thousand, two hundred thirteen".