1286608 has 20 divisors (see below), whose sum is σ = 2521540. Its totient is φ = 635904.

The previous prime is 1286587. The next prime is 1286617. The reversal of 1286608 is 8066821.

It can be written as a sum of positive squares in 2 ways, for example, as 659344 + 627264 = 812^2 + 792^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1286608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138 + ... + 1966.

It is an arithmetic number, because the mean of its divisors is an integer number (126077).

2^1286608 is an apocalyptic number.

It is an amenable number.

1286608 is a deficient number, since it is larger than the sum of its proper divisors (1234932).

1286608 is an equidigital number, since it uses as much as digits as its factorization.

1286608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1286608 is about 1134.2874415244. The cubic root of 1286608 is about 108.7632264707.

The spelling of 1286608 in words is "one million, two hundred eighty-six thousand, six hundred eight".