1200664 has 8 divisors (see below), whose sum is σ = 2251260. Its totient is φ = 600328.

The previous prime is 1200643. The next prime is 1200673. The reversal of 1200664 is 4660021.

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

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75034 + ... + 75049.

2^1200664 is an apocalyptic number.

It is an amenable number.

1200664 is a deficient number, since it is larger than the sum of its proper divisors (1050596).

1200664 is a wasteful number, since it uses less digits than its factorization.

1200664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150089 (or 150085 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1200664 is about 1095.7481462453. The cubic root of 1200664 is about 106.2854534512.

Adding to 1200664 its reverse (4660021), we get a palindrome (5860685).

The spelling of 1200664 in words is "one million, two hundred thousand, six hundred sixty-four".