1313687 has 6 divisors (see below), whose sum is σ = 1358424. Its totient is φ = 1270380.

The previous prime is 1313677. The next prime is 1313699. The reversal of 1313687 is 7863131.

It is not a de Polignac number, because 1313687 - 2⁶ = 1313623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278 + ... + 1644.

It is an arithmetic number, because the mean of its divisors is an integer number (226404).

2^1313687 is an apocalyptic number.

1313687 is a deficient number, since it is larger than the sum of its proper divisors (44737).

1313687 is an equidigital number, since it uses as much as digits as its factorization.

1313687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429 (or 1398 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 1313687 is about 1146.1618559348. The cubic root of 1313687 is about 109.5209748329.

The spelling of 1313687 in words is "one million, three hundred thirteen thousand, six hundred eighty-seven".