16461605 has 8 divisors (see below), whose sum is σ = 19806072. Its totient is φ = 13134528.

The previous prime is 16461547. The next prime is 16461659. The reversal of 16461605 is 50616461.

It can be written as a sum of positive squares in 4 ways, for example, as 1079521 + 15382084 = 1039^2 + 3922^2 .

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 16461605 - 2⁸ = 16461349 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2162 + ... + 6131.

It is an arithmetic number, because the mean of its divisors is an integer number (2475759).

Almost surely, 2^16461605 is an apocalyptic number.

It is an amenable number.

16461605 is a deficient number, since it is larger than the sum of its proper divisors (3344467).

16461605 is an equidigital number, since it uses as much as digits as its factorization.

16461605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8695.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 16461605 is about 4057.2903519467. The cubic root of 16461605 is about 254.3845467866.

The spelling of 16461605 in words is "sixteen million, four hundred sixty-one thousand, six hundred five".