1304690 has 8 divisors (see below), whose sum is σ = 2348460. Its totient is φ = 521872.

The previous prime is 1304687. The next prime is 1304707. The reversal of 1304690 is 964031.

It can be written as a sum of positive squares in 2 ways, for example, as 1301881 + 2809 = 1141^2 + 53^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1304690² = 3404431992200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65225 + ... + 65244.

2^1304690 is an apocalyptic number.

1304690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1304690 is a deficient number, since it is larger than the sum of its proper divisors (1043770).

1304690 is a wasteful number, since it uses less digits than its factorization.

1304690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130476.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1304690 is about 1142.2302745069. The cubic root of 1304690 is about 109.2703777791.

The spelling of 1304690 in words is "one million, three hundred four thousand, six hundred ninety".