1151663 has 4 divisors (see below), whose sum is σ = 1168920. Its totient is φ = 1134408.

The previous prime is 1151659. The next prime is 1151671. The reversal of 1151663 is 3661511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1151663 - 2² = 1151659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8528 + ... + 8661.

It is an arithmetic number, because the mean of its divisors is an integer number (292230).

2^1151663 is an apocalyptic number.

1151663 is a deficient number, since it is larger than the sum of its proper divisors (17257).

1151663 is an equidigital number, since it uses as much as digits as its factorization.

1151663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17256.

The product of its digits is 540, while the sum is 23.

The square root of 1151663 is about 1073.1556271110. The cubic root of 1151663 is about 104.8194326667.

The spelling of 1151663 in words is "one million, one hundred fifty-one thousand, six hundred sixty-three".