1304861 has 4 divisors (see below), whose sum is σ = 1332672. Its totient is φ = 1277052.

The previous prime is 1304857. The next prime is 1304867. The reversal of 1304861 is 1684031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1304861 - 2² = 1304857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304867) 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, 13835 + ... + 13928.

It is an arithmetic number, because the mean of its divisors is an integer number (333168).

2^1304861 is an apocalyptic number.

It is an amenable number.

1304861 is a deficient number, since it is larger than the sum of its proper divisors (27811).

1304861 is an equidigital number, since it uses as much as digits as its factorization.

1304861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27810.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1304861 is about 1142.3051256122. The cubic root of 1304861 is about 109.2751514337.

Adding to 1304861 its reverse (1684031), we get a palindrome (2988892).

The spelling of 1304861 in words is "one million, three hundred four thousand, eight hundred sixty-one".