16790681 has 8 divisors (see below), whose sum is σ = 17478720. Its totient is φ = 16109968.

The previous prime is 16790671. The next prime is 16790693. The reversal of 16790681 is 18609761.

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

It is a cyclic number.

It is not a de Polignac number, because 16790681 - 2¹⁴ = 16774297 is a prime.

It is a super-2 number, since 2×16790681² = 563853936887522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16790671) 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, 3110 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (2184840).

Almost surely, 2^16790681 is an apocalyptic number.

It is an amenable number.

16790681 is a deficient number, since it is larger than the sum of its proper divisors (688039).

16790681 is a wasteful number, since it uses less digits than its factorization.

16790681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 16790681 is about 4097.6433470960. The cubic root of 16790681 is about 256.0684682178.

It can be divided in two parts, 16790 and 681, that added together give a palindrome (17471).

The spelling of 16790681 in words is "sixteen million, seven hundred ninety thousand, six hundred eighty-one".