16623696 has 40 divisors (see below), whose sum is σ = 43997184. Its totient is φ = 5405440.

The previous prime is 16623683. The next prime is 16623709. The reversal of 16623696 is 69632661.

It is a happy number.

16623696 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16623683) and next prime (16623709).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2256 + ... + 6191.

Almost surely, 2^16623696 is an apocalyptic number.

16623696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16623696 is an abundant number, since it is smaller than the sum of its proper divisors (27373488).

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

16623696 is a wasteful number, since it uses less digits than its factorization.

16623696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8499 (or 8493 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 16623696 is about 4077.2166976995. The cubic root of 16623696 is about 255.2167630161.

The spelling of 16623696 in words is "sixteen million, six hundred twenty-three thousand, six hundred ninety-six".