1286670 has 64 divisors (see below), whose sum is σ = 3856896. Its totient is φ = 266880.

The previous prime is 1286669. The next prime is 1286683. The reversal of 1286670 is 766821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2032 + ... + 2588.

It is an arithmetic number, because the mean of its divisors is an integer number (60264).

2^1286670 is an apocalyptic number.

1286670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1286670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928448).

1286670 is an abundant number, since it is smaller than the sum of its proper divisors (2570226).

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

1286670 is a wasteful number, since it uses less digits than its factorization.

1286670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585.

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

The square root of 1286670 is about 1134.3147711284. The cubic root of 1286670 is about 108.7649734964.

The spelling of 1286670 in words is "one million, two hundred eighty-six thousand, six hundred seventy".