1418661 has 8 divisors (see below), whose sum is σ = 2101760. Its totient is φ = 945756.

The previous prime is 1418621. The next prime is 1418687. The reversal of 1418661 is 1668141.

It is not a de Polignac number, because 1418661 - 2¹⁴ = 1402277 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: 52543 = 1418661 / (1 + 4 + 1 + 8 + 6 + 6 + 1).

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1418611) 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, 26245 + ... + 26298.

It is an arithmetic number, because the mean of its divisors is an integer number (262720).

2^1418661 is an apocalyptic number.

It is an amenable number.

1418661 is a deficient number, since it is larger than the sum of its proper divisors (683099).

1418661 is an equidigital number, since it uses as much as digits as its factorization.

1418661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52552 (or 52546 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1418661 is about 1191.0755643535. The cubic root of 1418661 is about 112.3637461545.

The spelling of 1418661 in words is "one million, four hundred eighteen thousand, six hundred sixty-one".