16650490 has 16 divisors (see below), whose sum is σ = 30019752. Its totient is φ = 6649344.

The previous prime is 16650461. The next prime is 16650509. The reversal of 16650490 is 9405661.

It can be written as a sum of positive squares in 4 ways, for example, as 9126441 + 7524049 = 3021^2 + 2743^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8482 + ... + 10258.

Almost surely, 2^16650490 is an apocalyptic number.

16650490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16650490 is a deficient number, since it is larger than the sum of its proper divisors (13369262).

16650490 is a wasteful number, since it uses less digits than its factorization.

16650490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 16650490 is about 4080.5011947064. The cubic root of 16650490 is about 255.3538084976.

The spelling of 16650490 in words is "sixteen million, six hundred fifty thousand, four hundred ninety".