940661 has 4 divisors (see below), whose sum is σ = 996012. Its totient is φ = 885312.

The previous prime is 940649. The next prime is 940669. The reversal of 940661 is 166049.

940661 = T₁₆₆ + T₁₆₇ + ... + T₂₁₆.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 442225 + 498436 = 665^2 + 706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-940661 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 940661.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 940661.

It is not an unprimeable number, because it can be changed into a prime (940669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27650 + ... + 27683.

It is an arithmetic number, because the mean of its divisors is an integer number (249003).

2⁹⁴⁰⁶⁶¹ is an apocalyptic number.

It is an amenable number.

940661 is a deficient number, since it is larger than the sum of its proper divisors (55351).

940661 is a wasteful number, since it uses less digits than its factorization.

940661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55350.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 940661 is about 969.8767962994. The cubic root of 940661 is about 97.9815667121.

The spelling of 940661 in words is "nine hundred forty thousand, six hundred sixty-one".