1284686564 has 12 divisors (see below), whose sum is σ = 2569373184. Its totient is φ = 550579944.

The previous prime is 1284686561. The next prime is 1284686581. The reversal of 1284686564 is 4656864821.

1284686564 is an admirable number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1284686561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22940804 + ... + 22940859.

It is an arithmetic number, because the mean of its divisors is an integer number (214114432).

Almost surely, 2^1284686564 is an apocalyptic number.

1284686564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1284686564 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.

1284686564 is a wasteful number, since it uses less digits than its factorization.

1284686564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45881674 (or 45881672 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 50.

The square root of 1284686564 is about 35842.5245204631. The cubic root of 1284686564 is about 1087.0905672179.

The spelling of 1284686564 in words is "one billion, two hundred eighty-four million, six hundred eighty-six thousand, five hundred sixty-four".