1148661 has 24 divisors (see below), whose sum is σ = 1790880. Its totient is φ = 734832.

The previous prime is 1148647. The next prime is 1148663. The reversal of 1148661 is 1668411.

It is not a de Polignac number, because 1148661 - 2⁵ = 1148629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148663) 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 23 ways as a sum of consecutive naturals, for example, 6966 + ... + 7128.

It is an arithmetic number, because the mean of its divisors is an integer number (74620).

2^1148661 is an apocalyptic number.

It is an amenable number.

1148661 is a deficient number, since it is larger than the sum of its proper divisors (642219).

1148661 is an equidigital number, since it uses as much as digits as its factorization.

1148661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 195 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1148661 is about 1071.7560356723. The cubic root of 1148661 is about 104.7282770234.

The spelling of 1148661 in words is "one million, one hundred forty-eight thousand, six hundred sixty-one".