1161636 has 24 divisors (see below), whose sum is σ = 3097920. Its totient is φ = 331872.

The previous prime is 1161619. The next prime is 1161637. The reversal of 1161636 is 6361611.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1161637) 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, 6831 + ... + 6998.

It is an arithmetic number, because the mean of its divisors is an integer number (129080).

2^1161636 is an apocalyptic number.

It is an amenable number.

1161636 is an abundant number, since it is smaller than the sum of its proper divisors (1936284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161636 is a wasteful number, since it uses less digits than its factorization.

1161636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13843 (or 13841 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 1161636 is about 1077.7921877616. The cubic root of 1161636 is about 105.1211300495.

The spelling of 1161636 in words is "one million, one hundred sixty-one thousand, six hundred thirty-six".