1401766 has 4 divisors (see below), whose sum is σ = 2102652. Its totient is φ = 700882.

The previous prime is 1401761. The next prime is 1401767. The reversal of 1401766 is 6671041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6671041 = 13 ⋅513157.

It is a self number, because there is not a number n which added to its sum of digits gives 1401766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401761) 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 as a sum of consecutive naturals, namely, 350440 + ... + 350443.

It is an arithmetic number, because the mean of its divisors is an integer number (525663).

2^1401766 is an apocalyptic number.

1401766 is a deficient number, since it is larger than the sum of its proper divisors (700886).

1401766 is an equidigital number, since it uses as much as digits as its factorization.

1401766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700885.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1401766 is about 1183.9619926332. The cubic root of 1401766 is about 111.9159126500.

The spelling of 1401766 in words is "one million, four hundred one thousand, seven hundred sixty-six".