1287608 has 16 divisors (see below), whose sum is σ = 2759280. Its totient is φ = 551808.

The previous prime is 1287607. The next prime is 1287613. The reversal of 1287608 is 8067821.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11441 + ... + 11552.

It is an arithmetic number, because the mean of its divisors is an integer number (172455).

2^1287608 is an apocalyptic number.

It is an amenable number.

1287608 is an abundant number, since it is smaller than the sum of its proper divisors (1471672).

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

1287608 is a wasteful number, since it uses less digits than its factorization.

1287608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23006 (or 23002 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1287608 is about 1134.7281612792. The cubic root of 1287608 is about 108.7913974600.

The spelling of 1287608 in words is "one million, two hundred eighty-seven thousand, six hundred eight".