16690612 has 6 divisors (see below), whose sum is σ = 29208578. Its totient is φ = 8345304.

The previous prime is 16690603. The next prime is 16690613. The reversal of 16690612 is 21609661.

It can be written as a sum of positive squares in only one way, i.e., 13571856 + 3118756 = 3684^2 + 1766^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16690613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2086323 + ... + 2086330.

Almost surely, 2^16690612 is an apocalyptic number.

It is an amenable number.

16690612 is a deficient number, since it is larger than the sum of its proper divisors (12517966).

16690612 is a wasteful number, since it uses less digits than its factorization.

16690612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172657 (or 4172655 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 16690612 is about 4085.4145444496. The cubic root of 16690612 is about 255.5587491584.

The spelling of 16690612 in words is "sixteen million, six hundred ninety thousand, six hundred twelve".