660670441 has 4 divisors (see below), whose sum is σ = 661068432. Its totient is φ = 660272452.

The previous prime is 660670421. The next prime is 660670457. The reversal of 660670441 is 144076066.

It is a happy number.

660670441 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 660670441 - 2¹⁹ = 660146153 is a prime.

It is a super-2 number, since 2×660670441² = 872970863222268962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660670397 and 660670406.

It is not an unprimeable number, because it can be changed into a prime (660670421) 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, 196495 + ... + 199828.

It is an arithmetic number, because the mean of its divisors is an integer number (165267108).

Almost surely, 2^660670441 is an apocalyptic number.

It is an amenable number.

660670441 is a deficient number, since it is larger than the sum of its proper divisors (397991).

660670441 is a wasteful number, since it uses less digits than its factorization.

660670441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397990.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 660670441 is about 25703.5102855622. The cubic root of 660670441 is about 870.9534801245.

The spelling of 660670441 in words is "six hundred sixty million, six hundred seventy thousand, four hundred forty-one".