16697616 has 40 divisors (see below), whose sum is σ = 46455360. Its totient is φ = 5137536.

The previous prime is 16697581. The next prime is 16697617. The reversal of 16697616 is 61679661.

16697616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 8 and base 16.

It is not an unprimeable number, because it can be changed into a prime (16697617) 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, 12756 + ... + 14003.

It is an arithmetic number, because the mean of its divisors is an integer number (1161384).

Almost surely, 2^16697616 is an apocalyptic number.

16697616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16697616 is an abundant number, since it is smaller than the sum of its proper divisors (29757744).

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

16697616 is a wasteful number, since it uses less digits than its factorization.

16697616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26783 (or 26777 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 16697616 is about 4086.2716502944. The cubic root of 16697616 is about 255.5944914700.

The spelling of 16697616 in words is "sixteen million, six hundred ninety-seven thousand, six hundred sixteen".