16672447 has 8 divisors (see below), whose sum is σ = 18979200. Its totient is φ = 14497560.

The previous prime is 16672441. The next prime is 16672463. The reversal of 16672447 is 74427661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16672447 - 2¹¹ = 16670399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16672441) 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, 32697 + ... + 33202.

It is an arithmetic number, because the mean of its divisors is an integer number (2372400).

Almost surely, 2^16672447 is an apocalyptic number.

16672447 is a deficient number, since it is larger than the sum of its proper divisors (2306753).

16672447 is a wasteful number, since it uses less digits than its factorization.

16672447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65933.

The product of its digits is 56448, while the sum is 37.

The square root of 16672447 is about 4083.1907866275. The cubic root of 16672447 is about 255.4660042110.

It can be divided in two parts, 1667 and 2447, that added together give a palindrome (4114).

The spelling of 16672447 in words is "sixteen million, six hundred seventy-two thousand, four hundred forty-seven".