1316487 has 4 divisors (see below), whose sum is σ = 1755320. Its totient is φ = 877656.

The previous prime is 1316479. The next prime is 1316507. The reversal of 1316487 is 7846131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1316487 - 2³ = 1316479 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316407) 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, 219412 + ... + 219417.

It is an arithmetic number, because the mean of its divisors is an integer number (438830).

2^1316487 is an apocalyptic number.

1316487 is a deficient number, since it is larger than the sum of its proper divisors (438833).

1316487 is an equidigital number, since it uses as much as digits as its factorization.

1316487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438832.

The product of its digits is 4032, while the sum is 30.

The square root of 1316487 is about 1147.3826737405. The cubic root of 1316487 is about 109.5987308269.

The spelling of 1316487 in words is "one million, three hundred sixteen thousand, four hundred eighty-seven".