16361661 has 8 divisors (see below), whose sum is σ = 21882784. Its totient is φ = 10874160.

The previous prime is 16361651. The next prime is 16361693. The reversal of 16361661 is 16616361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16361661 - 2¹⁰ = 16360637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16361621) 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, 7246 + ... + 9231.

It is an arithmetic number, because the mean of its divisors is an integer number (2735348).

Almost surely, 2^16361661 is an apocalyptic number.

It is an amenable number.

16361661 is a deficient number, since it is larger than the sum of its proper divisors (5521123).

16361661 is a wasteful number, since it uses less digits than its factorization.

16361661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16811.

The product of its digits is 3888, while the sum is 30.

The square root of 16361661 is about 4044.9550059302. The cubic root of 16361661 is about 253.8686830255.

The spelling of 16361661 in words is "sixteen million, three hundred sixty-one thousand, six hundred sixty-one".