1605116 has 6 divisors (see below), whose sum is σ = 2808960. Its totient is φ = 802556.

The previous prime is 1605103. The next prime is 1605127. The reversal of 1605116 is 6115061.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200636 + ... + 200643.

It is an arithmetic number, because the mean of its divisors is an integer number (468160).

2^1605116 is an apocalyptic number.

It is an amenable number.

1605116 is a deficient number, since it is larger than the sum of its proper divisors (1203844).

1605116 is a wasteful number, since it uses less digits than its factorization.

1605116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401283 (or 401281 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1605116 is about 1266.9317266530. The cubic root of 1605116 is about 117.0852375195.

It can be divided in two parts, 160 and 5116, that multiplied together give a triangular number (818560 = T₁₂₇₉).

The spelling of 1605116 in words is "one million, six hundred five thousand, one hundred sixteen".