1304664 has 16 divisors (see below), whose sum is σ = 3261720. Its totient is φ = 434880.

The previous prime is 1304659. The next prime is 1304669. The reversal of 1304664 is 4664031.

It is an interprime number because it is at equal distance from previous prime (1304659) and next prime (1304669).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 54361 = 1304664 / (1 + 3 + 0 + 4 + 6 + 6 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27157 + ... + 27204.

2^1304664 is an apocalyptic number.

It is an amenable number.

1304664 is an abundant number, since it is smaller than the sum of its proper divisors (1957056).

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

1304664 is a wasteful number, since it uses less digits than its factorization.

1304664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54370 (or 54366 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1304664 is about 1142.2188932074. The cubic root of 1304664 is about 109.2696519237.

Adding to 1304664 its reverse (4664031), we get a palindrome (5968695).

The spelling of 1304664 in words is "one million, three hundred four thousand, six hundred sixty-four".