16140605 has 8 divisors (see below), whose sum is σ = 20858712. Its totient is φ = 11919168.

The previous prime is 16140601. The next prime is 16140613. The reversal of 16140605 is 50604161.

It can be written as a sum of positive squares in 4 ways, for example, as 228484 + 15912121 = 478^2 + 3989^2 .

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 16140605 - 2² = 16140601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16140601) 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, 124094 + ... + 124223.

It is an arithmetic number, because the mean of its divisors is an integer number (2607339).

Almost surely, 2^16140605 is an apocalyptic number.

It is an amenable number.

16140605 is a deficient number, since it is larger than the sum of its proper divisors (4718107).

16140605 is a wasteful number, since it uses less digits than its factorization.

16140605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248335.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 16140605 is about 4017.5371809107. The cubic root of 16140605 is about 252.7201882876.

Adding to 16140605 its reverse (50604161), we get a palindrome (66744766).

The spelling of 16140605 in words is "sixteen million, one hundred forty thousand, six hundred five".