16473645 has 16 divisors (see below), whose sum is σ = 29286720. Its totient is φ = 8785872.

The previous prime is 16473631. The next prime is 16473659. The reversal of 16473645 is 54637461.

It is a happy number.

16473645 is a `hidden beast` number, since 1 + 6 + 4 + 7 + 3 + 645 = 666.

It is an interprime number because it is at equal distance from previous prime (16473631) and next prime (16473659).

It is not a de Polignac number, because 16473645 - 2⁶ = 16473581 is a prime.

It is a super-3 number, since 3×16473645³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60879 + ... + 61148.

It is an arithmetic number, because the mean of its divisors is an integer number (1830420).

Almost surely, 2^16473645 is an apocalyptic number.

16473645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16473645 is a deficient number, since it is larger than the sum of its proper divisors (12813075).

16473645 is a wasteful number, since it uses less digits than its factorization.

16473645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122041 (or 122035 counting only the distinct ones).

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

The square root of 16473645 is about 4058.7738296190. The cubic root of 16473645 is about 254.4465505329.

Adding to 16473645 its product of digits (60480), we get a triangular number (16534125 = T₅₇₅₀).

The spelling of 16473645 in words is "sixteen million, four hundred seventy-three thousand, six hundred forty-five".