1161663 has 8 divisors (see below), whose sum is σ = 1598976. Its totient is φ = 749400.

The previous prime is 1161659. The next prime is 1161683. The reversal of 1161663 is 3661611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1161663 - 2² = 1161659 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161683) 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, 6153 + ... + 6338.

It is an arithmetic number, because the mean of its divisors is an integer number (199872).

2^1161663 is an apocalyptic number.

1161663 is a deficient number, since it is larger than the sum of its proper divisors (437313).

1161663 is a wasteful number, since it uses less digits than its factorization.

1161663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12525.

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

The square root of 1161663 is about 1077.8047132946. The cubic root of 1161663 is about 105.1219444896.

The spelling of 1161663 in words is "one million, one hundred sixty-one thousand, six hundred sixty-three".