941680661 has 4 divisors (see below), whose sum is σ = 964648524. Its totient is φ = 918712800.

The previous prime is 941680657. The next prime is 941680669. The reversal of 941680661 is 166086149.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166086149 = 107 ⋅1552207.

It can be written as a sum of positive squares in 2 ways, for example, as 24196561 + 917484100 = 4919^2 + 30290^2 .

It is a cyclic number.

It is not a de Polignac number, because 941680661 - 2² = 941680657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 22967821 = 941680661 / (9 + 4 + 1 + 6 + 8 + 0 + 6 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (941680669) 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 3 ways as a sum of consecutive naturals, for example, 11483870 + ... + 11483951.

It is an arithmetic number, because the mean of its divisors is an integer number (241162131).

Almost surely, 2^941680661 is an apocalyptic number.

It is an amenable number.

941680661 is a deficient number, since it is larger than the sum of its proper divisors (22967863).

941680661 is a wasteful number, since it uses less digits than its factorization.

941680661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22967862.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 941680661 is about 30686.8157520457. The cubic root of 941680661 is about 980.1695739464.

The spelling of 941680661 in words is "nine hundred forty-one million, six hundred eighty thousand, six hundred sixty-one".