16506616 has 16 divisors (see below), whose sum is σ = 35371440. Its totient is φ = 7074240.

The previous prime is 16506557. The next prime is 16506619. The reversal of 16506616 is 61660561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16506619) 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, 147325 + ... + 147436.

It is an arithmetic number, because the mean of its divisors is an integer number (2210715).

Almost surely, 2^16506616 is an apocalyptic number.

It is an amenable number.

16506616 is an abundant number, since it is smaller than the sum of its proper divisors (18864824).

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

16506616 is a wasteful number, since it uses less digits than its factorization.

16506616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294774 (or 294770 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 16506616 is about 4062.8334940039. The cubic root of 16506616 is about 254.6161905144.

The spelling of 16506616 in words is "sixteen million, five hundred six thousand, six hundred sixteen".