1364644 has 24 divisors (see below), whose sum is σ = 2508408. Its totient is φ = 648960.

The previous prime is 1364633. The next prime is 1364663. The reversal of 1364644 is 4464631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19044 + 1345600 = 138^2 + 1160^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8614 + ... + 8770.

It is an arithmetic number, because the mean of its divisors is an integer number (104517).

2^1364644 is an apocalyptic number.

It is an amenable number.

1364644 is a deficient number, since it is larger than the sum of its proper divisors (1143764).

1364644 is a wasteful number, since it uses less digits than its factorization.

1364644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 1364644 is about 1168.1797806845. The cubic root of 1364644 is about 110.9191305563.

The spelling of 1364644 in words is "one million, three hundred sixty-four thousand, six hundred forty-four".