16690456 has 16 divisors (see below), whose sum is σ = 32655600. Its totient is φ = 7982304.

The previous prime is 16690423. The next prime is 16690459. The reversal of 16690456 is 65409661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16690459) 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, 45171 + ... + 45538.

It is an arithmetic number, because the mean of its divisors is an integer number (2040975).

Almost surely, 2^16690456 is an apocalyptic number.

It is an amenable number.

16690456 is a deficient number, since it is larger than the sum of its proper divisors (15965144).

16690456 is a wasteful number, since it uses less digits than its factorization.

16690456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90738 (or 90734 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 16690456 is about 4085.3954520952. The cubic root of 16690456 is about 255.5579529566.

The spelling of 16690456 in words is "sixteen million, six hundred ninety thousand, four hundred fifty-six".