1368784 has 10 divisors (see below), whose sum is σ = 2652050. Its totient is φ = 684384.

The previous prime is 1368761. The next prime is 1368791. The reversal of 1368784 is 4878631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 760384 + 608400 = 872^2 + 780^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42759 + ... + 42790.

It is an arithmetic number, because the mean of its divisors is an integer number (265205).

2^1368784 is an apocalyptic number.

It is an amenable number.

1368784 is a deficient number, since it is larger than the sum of its proper divisors (1283266).

1368784 is an equidigital number, since it uses as much as digits as its factorization.

1368784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85557 (or 85551 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 1368784 is about 1169.9504263002. The cubic root of 1368784 is about 111.0311845936.

The spelling of 1368784 in words is "one million, three hundred sixty-eight thousand, seven hundred eighty-four".