1315866 has 8 divisors (see below), whose sum is σ = 2631744. Its totient is φ = 438620.

The previous prime is 1315861. The next prime is 1315871. The reversal of 1315866 is 6685131.

It is an interprime number because it is at equal distance from previous prime (1315861) and next prime (1315871).

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

1315866 is an admirable number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1315861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109650 + ... + 109661.

It is an arithmetic number, because the mean of its divisors is an integer number (328968).

2^1315866 is an apocalyptic number.

1315866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315866 is a wasteful number, since it uses less digits than its factorization.

1315866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219316.

The product of its digits is 4320, while the sum is 30.

The square root of 1315866 is about 1147.1120259155. The cubic root of 1315866 is about 109.5814951798.

The spelling of 1315866 in words is "one million, three hundred fifteen thousand, eight hundred sixty-six".