1165616 has 20 divisors (see below), whose sum is σ = 2275152. Its totient is φ = 578496.

The previous prime is 1165583. The next prime is 1165643. The reversal of 1165616 is 6165611.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4070 + ... + 4346.

2^1165616 is an apocalyptic number.

1165616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1165616 is a deficient number, since it is larger than the sum of its proper divisors (1109536).

1165616 is a wasteful number, since it uses less digits than its factorization.

1165616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 542 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 1165616 is about 1079.6369760248. The cubic root of 1165616 is about 105.2410486197.

The spelling of 1165616 in words is "one million, one hundred sixty-five thousand, six hundred sixteen".