660253443 has 8 divisors (see below), whose sum is σ = 893477568. Its totient is φ = 433599144.

The previous prime is 660253427. The next prime is 660253453. The reversal of 660253443 is 344352066.

660253443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660253443 - 2⁴ = 660253427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660253423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642221 + ... + 1642622.

It is an arithmetic number, because the mean of its divisors is an integer number (111684696).

Almost surely, 2^660253443 is an apocalyptic number.

660253443 is a deficient number, since it is larger than the sum of its proper divisors (233224125).

660253443 is a wasteful number, since it uses less digits than its factorization.

660253443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284913.

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 660253443 is about 25695.3973115809. The cubic root of 660253443 is about 870.7702004968.

The spelling of 660253443 in words is "six hundred sixty million, two hundred fifty-three thousand, four hundred forty-three".