1306481 has 8 divisors (see below), whose sum is σ = 1445664. Its totient is φ = 1170720.

The previous prime is 1306477. The next prime is 1306483. The reversal of 1306481 is 1846031.

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

It is a cyclic number.

It is not a de Polignac number, because 1306481 - 2² = 1306477 is a prime.

It is a super-2 number, since 2×1306481² = 3413785206722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1306483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (180708).

2^1306481 is an apocalyptic number.

1306481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1306481 is a deficient number, since it is larger than the sum of its proper divisors (139183).

1306481 is a wasteful number, since it uses less digits than its factorization.

1306481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711.

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

The square root of 1306481 is about 1143.0139981645. The cubic root of 1306481 is about 109.3203548528.

The spelling of 1306481 in words is "one million, three hundred six thousand, four hundred eighty-one".