16816690 has 16 divisors (see below), whose sum is σ = 33022080. Its totient is φ = 6115120.

The previous prime is 16816673. The next prime is 16816693. The reversal of 16816690 is 9661861.

It is a super-3 number, since 3×16816690³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (16816693) 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, 76330 + ... + 76549.

It is an arithmetic number, because the mean of its divisors is an integer number (2063880).

Almost surely, 2^16816690 is an apocalyptic number.

16816690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16816690 is a deficient number, since it is larger than the sum of its proper divisors (16205390).

16816690 is a wasteful number, since it uses less digits than its factorization.

16816690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152897.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 16816690 is about 4100.8157725019. The cubic root of 16816690 is about 256.2006178885.

The spelling of 16816690 in words is "sixteen million, eight hundred sixteen thousand, six hundred ninety".