16650648 has 48 divisors (see below), whose sum is σ = 51539280. Its totient is φ = 4757184.

The previous prime is 16650583. The next prime is 16650649. The reversal of 16650648 is 84605661.

16650648 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 0 + 648 = 666.

16650648 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 a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16650649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16015 + ... + 17022.

It is an arithmetic number, because the mean of its divisors is an integer number (1073735).

Almost surely, 2^16650648 is an apocalyptic number.

16650648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16650648 is an abundant number, since it is smaller than the sum of its proper divisors (34888632).

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

16650648 is a wasteful number, since it uses less digits than its factorization.

16650648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33056 (or 33049 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 16650648 is about 4080.5205550273. The cubic root of 16650648 is about 255.3546161970.

The spelling of 16650648 in words is "sixteen million, six hundred fifty thousand, six hundred forty-eight".