1307684257 has 8 divisors (see below), whose sum is σ = 1441272672. Its totient is φ = 1176547200.

The previous prime is 1307684239. The next prime is 1307684263. The reversal of 1307684257 is 7524867031.

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 1307684257 - 2¹⁵ = 1307651489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1307684237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611719 + ... + 613852.

It is an arithmetic number, because the mean of its divisors is an integer number (180159084).

Almost surely, 2^1307684257 is an apocalyptic number.

It is an amenable number.

1307684257 is a deficient number, since it is larger than the sum of its proper divisors (133588415).

1307684257 is a wasteful number, since it uses less digits than its factorization.

1307684257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225679.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 1307684257 is about 36161.9172196387. The cubic root of 1307684257 is about 1093.5390556914.

The spelling of 1307684257 in words is "one billion, three hundred seven million, six hundred eighty-four thousand, two hundred fifty-seven".