1287307 has 8 divisors (see below), whose sum is σ = 1548800. Its totient is φ = 1045224.

The previous prime is 1287289. The next prime is 1287323. The reversal of 1287307 is 7037821.

It is a happy number.

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 1287307 - 2⁷ = 1287179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1287347) 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, 4707 + ... + 4972.

It is an arithmetic number, because the mean of its divisors is an integer number (193600).

2^1287307 is an apocalyptic number.

1287307 is a deficient number, since it is larger than the sum of its proper divisors (261493).

1287307 is an equidigital number, since it uses as much as digits as its factorization.

1287307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1287307 is about 1134.5955226423. The cubic root of 1287307 is about 108.7829195271.

The spelling of 1287307 in words is "one million, two hundred eighty-seven thousand, three hundred seven".