16653474 has 12 divisors (see below), whose sum is σ = 36082566. Its totient is φ = 5551152.

The previous prime is 16653473. The next prime is 16653487. The reversal of 16653474 is 47435661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12552849 + 4100625 = 3543^2 + 2025^2 .

It is a super-3 number, since 3×16653474³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16653473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462579 + ... + 462614.

Almost surely, 2^16653474 is an apocalyptic number.

16653474 is an abundant number, since it is smaller than the sum of its proper divisors (19429092).

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

16653474 is a wasteful number, since it uses less digits than its factorization.

16653474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925201 (or 925198 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 16653474 is about 4080.8668196843. The cubic root of 16653474 is about 255.3690619075.

The spelling of 16653474 in words is "sixteen million, six hundred fifty-three thousand, four hundred seventy-four".