1146564 has 18 divisors (see below), whose sum is σ = 2898350. Its totient is φ = 382176.

The previous prime is 1146559. The next prime is 1146569. The reversal of 1146564 is 4656411.

1146564 is a `hidden beast` number, since 1 + 1 + 4 + 656 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1146559) and next prime (1146569).

It can be written as a sum of positive squares in only one way, i.e., 980100 + 166464 = 990^2 + 408^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1146569) 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 5 ways as a sum of consecutive naturals, for example, 15889 + ... + 15960.

2^1146564 is an apocalyptic number.

It is an amenable number.

1146564 is an abundant number, since it is smaller than the sum of its proper divisors (1751786).

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

1146564 is a wasteful number, since it uses less digits than its factorization.

1146564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31859 (or 31854 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1146564 is about 1070.7772877681. Note that the first 3 decimals coincide. The cubic root of 1146564 is about 104.6645074180.

The spelling of 1146564 in words is "one million, one hundred forty-six thousand, five hundred sixty-four".