1363664 has 10 divisors (see below), whose sum is σ = 2642130. Its totient is φ = 681824.

The previous prime is 1363631. The next prime is 1363673. The reversal of 1363664 is 4663631.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 153664 = 1100^2 + 392^2 .

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, 42599 + ... + 42630.

It is an arithmetic number, because the mean of its divisors is an integer number (264213).

2^1363664 is an apocalyptic number.

It is an amenable number.

1363664 is a deficient number, since it is larger than the sum of its proper divisors (1278466).

1363664 is an equidigital number, since it uses as much as digits as its factorization.

1363664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85237 (or 85231 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

The square root of 1363664 is about 1167.7602493663. The cubic root of 1363664 is about 110.8925725239.

The spelling of 1363664 in words is "one million, three hundred sixty-three thousand, six hundred sixty-four".