1156664 has 8 divisors (see below), whose sum is σ = 2168760. Its totient is φ = 578328.

The previous prime is 1156643. The next prime is 1156681. The reversal of 1156664 is 4666511.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72284 + ... + 72299.

It is an arithmetic number, because the mean of its divisors is an integer number (271095).

2^1156664 is an apocalyptic number.

It is an amenable number.

1156664 is a deficient number, since it is larger than the sum of its proper divisors (1012096).

1156664 is a wasteful number, since it uses less digits than its factorization.

1156664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144589 (or 144585 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 1156664 is about 1075.4831472413. The cubic root of 1156664 is about 104.9709367786.

The spelling of 1156664 in words is "one million, one hundred fifty-six thousand, six hundred sixty-four".