1506664 has 8 divisors (see below), whose sum is σ = 2825010. Its totient is φ = 753328.

The previous prime is 1506653. The next prime is 1506689. The reversal of 1506664 is 4666051.

It can be written as a sum of positive squares in only one way, i.e., 1304164 + 202500 = 1142^2 + 450^2 .

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 (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 94159 + ... + 94174.

2^1506664 is an apocalyptic number.

It is an amenable number.

1506664 is a deficient number, since it is larger than the sum of its proper divisors (1318346).

1506664 is a wasteful number, since it uses less digits than its factorization.

1506664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188339 (or 188335 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1506664 is about 1227.4624230501. The cubic root of 1506664 is about 114.6406932939.

The spelling of 1506664 in words is "one million, five hundred six thousand, six hundred sixty-four".