16673731 has 4 divisors (see below), whose sum is σ = 16686432. Its totient is φ = 16661032.

The previous prime is 16673729. The next prime is 16673737. The reversal of 16673731 is 13737661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13737661 = 7 ⋅1962523.

It is a cyclic number.

It is not a de Polignac number, because 16673731 - 2¹ = 16673729 is a prime.

It is a super-2 number, since 2×16673731² = 556026610920722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16673737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4120 + ... + 7093.

It is an arithmetic number, because the mean of its divisors is an integer number (4171608).

Almost surely, 2^16673731 is an apocalyptic number.

16673731 is a deficient number, since it is larger than the sum of its proper divisors (12701).

16673731 is a wasteful number, since it uses less digits than its factorization.

16673731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12700.

The product of its digits is 15876, while the sum is 34.

The square root of 16673731 is about 4083.3480135791. The cubic root of 16673731 is about 255.4725621352.

The spelling of 16673731 in words is "sixteen million, six hundred seventy-three thousand, seven hundred thirty-one".