1149664 has 24 divisors (see below), whose sum is σ = 2326968. Its totient is φ = 558720.

The previous prime is 1149661. The next prime is 1149679. The reversal of 1149664 is 4669411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699 + ... + 1669.

It is an arithmetic number, because the mean of its divisors is an integer number (96957).

2^1149664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1149664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1163484).

1149664 is an abundant number, since it is smaller than the sum of its proper divisors (1177304).

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

1149664 is an equidigital number, since it uses as much as digits as its factorization.

1149664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 1010 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 1149664 is about 1072.2238572239. The cubic root of 1149664 is about 104.7587507380.

The spelling of 1149664 in words is "one million, one hundred forty-nine thousand, six hundred sixty-four".