663920141 has 4 divisors (see below), whose sum is σ = 667290492. Its totient is φ = 660549792.

The previous prime is 663920137. The next prime is 663920207. The reversal of 663920141 is 141029366.

663920141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141029366 = 2 ⋅70514683.

It can be written as a sum of positive squares in 2 ways, for example, as 346332100 + 317588041 = 18610^2 + 17821^2 .

It is a cyclic number.

It is not a de Polignac number, because 663920141 - 2² = 663920137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663920098 and 663920107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663920111) 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, 1684880 + ... + 1685273.

It is an arithmetic number, because the mean of its divisors is an integer number (166822623).

Almost surely, 2^663920141 is an apocalyptic number.

It is an amenable number.

663920141 is a deficient number, since it is larger than the sum of its proper divisors (3370351).

663920141 is a wasteful number, since it uses less digits than its factorization.

663920141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370350.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 663920141 is about 25766.6478417353. The cubic root of 663920141 is about 872.3791579287.

The spelling of 663920141 in words is "six hundred sixty-three million, nine hundred twenty thousand, one hundred forty-one".