1011664 has 20 divisors (see below), whose sum is σ = 1998756. Its totient is φ = 495872.

The previous prime is 1011649. The next prime is 1011667. The reversal of 1011664 is 4661101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 627264 + 384400 = 792^2 + 620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252 + ... + 1444.

2^1011664 is an apocalyptic number.

It is an amenable number.

1011664 is a deficient number, since it is larger than the sum of its proper divisors (987092).

1011664 is a wasteful number, since it uses less digits than its factorization.

1011664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1248 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1011664 is about 1005.8150923505. The cubic root of 1011664 is about 100.3872980656.

Adding to 1011664 its reverse (4661101), we get a palindrome (5672765).

The spelling of 1011664 in words is "one million, eleven thousand, six hundred sixty-four".