1364661 has 8 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 909756.

The previous prime is 1364633. The next prime is 1364663. The reversal of 1364661 is 1664631.

1364661 is a `hidden beast` number, since 13 + 646 + 6 + 1 = 666.

It is not a de Polignac number, because 1364661 - 2⁷ = 1364533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 50543 = 1364661 / (1 + 3 + 6 + 4 + 6 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1364663) 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 7 ways as a sum of consecutive naturals, for example, 25245 + ... + 25298.

It is an arithmetic number, because the mean of its divisors is an integer number (252720).

2^1364661 is an apocalyptic number.

It is an amenable number.

1364661 is a deficient number, since it is larger than the sum of its proper divisors (657099).

1364661 is an equidigital number, since it uses as much as digits as its factorization.

1364661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50552 (or 50546 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 1364661 is about 1168.1870569391. The cubic root of 1364661 is about 110.9195911447.

It can be divided in two parts, 1364 and 661, that added together give a square (2025 = 45²).

The spelling of 1364661 in words is "one million, three hundred sixty-four thousand, six hundred sixty-one".