660474247 has 8 divisors (see below), whose sum is σ = 662770080. Its totient is φ = 658183680.

The previous prime is 660474229. The next prime is 660474253. The reversal of 660474247 is 742474066.

660474247 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 a cyclic number.

It is not a de Polignac number, because 660474247 - 2²³ = 652085639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660474277) 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, 654079 + ... + 655087.

It is an arithmetic number, because the mean of its divisors is an integer number (82846260).

Almost surely, 2^660474247 is an apocalyptic number.

660474247 is a deficient number, since it is larger than the sum of its proper divisors (2295833).

660474247 is a wasteful number, since it uses less digits than its factorization.

660474247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633.

The product of its (nonzero) digits is 225792, while the sum is 40.

The square root of 660474247 is about 25699.6935195733. The cubic root of 660474247 is about 870.8672582334.

The spelling of 660474247 in words is "six hundred sixty million, four hundred seventy-four thousand, two hundred forty-seven".