660373287 has 16 divisors (see below), whose sum is σ = 1006666752. Its totient is φ = 377212320.

The previous prime is 660373261. The next prime is 660373303. The reversal of 660373287 is 782373066.

It is not a de Polignac number, because 660373287 - 2⁶ = 660373223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660373237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77362 + ... + 85472.

It is an arithmetic number, because the mean of its divisors is an integer number (62916672).

Almost surely, 2^660373287 is an apocalyptic number.

660373287 is a deficient number, since it is larger than the sum of its proper divisors (346293465).

660373287 is a wasteful number, since it uses less digits than its factorization.

660373287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11998.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 660373287 is about 25697.7292187462. The cubic root of 660373287 is about 870.8228824236.

The spelling of 660373287 in words is "six hundred sixty million, three hundred seventy-three thousand, two hundred eighty-seven".