16990461 has 18 divisors (see below), whose sum is σ = 25150398. Its totient is φ = 11052720.

The previous prime is 16990459. The next prime is 16990469. The reversal of 16990461 is 16409961.

It can be written as a sum of positive squares in only one way, i.e., 14976900 + 2013561 = 3870^2 + 1419^2 .

It is not a de Polignac number, because 16990461 - 2¹ = 16990459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16131 + ... + 17151.

Almost surely, 2^16990461 is an apocalyptic number.

It is an amenable number.

16990461 is a deficient number, since it is larger than the sum of its proper divisors (8159937).

16990461 is a wasteful number, since it uses less digits than its factorization.

16990461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 16990461 is about 4121.9486896370. The cubic root of 16990461 is about 257.0800570185.

The spelling of 16990461 in words is "sixteen million, nine hundred ninety thousand, four hundred sixty-one".