1163601 has 6 divisors (see below), whose sum is σ = 1680770. Its totient is φ = 775728.

The previous prime is 1163587. The next prime is 1163609. The reversal of 1163601 is 1063611.

1163601 is a `hidden beast` number, since 1 + 1 + 63 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1040400 + 123201 = 1020^2 + 351^2 .

It is not a de Polignac number, because 1163601 - 2⁷ = 1163473 is a prime.

It is a Duffinian number.

1163601 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64636 + ... + 64653.

2^1163601 is an apocalyptic number.

It is an amenable number.

1163601 is a deficient number, since it is larger than the sum of its proper divisors (517169).

1163601 is a wasteful number, since it uses less digits than its factorization.

1163601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129295 (or 129292 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1163601 is about 1078.7033883325. The cubic root of 1163601 is about 105.1803702525.

It can be divided in two parts, 1163 and 601, that added together give a square (1764 = 42²).

The spelling of 1163601 in words is "one million, one hundred sixty-three thousand, six hundred one".