660788367 has 8 divisors (see below), whose sum is σ = 919357824. Its totient is φ = 421372248.

The previous prime is 660788357. The next prime is 660788389. The reversal of 660788367 is 763887066.

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

It is not a de Polignac number, because 660788367 - 2¹⁰ = 660787343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660788357) 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, 4788253 + ... + 4788390.

It is an arithmetic number, because the mean of its divisors is an integer number (114919728).

Almost surely, 2^660788367 is an apocalyptic number.

660788367 is a deficient number, since it is larger than the sum of its proper divisors (258569457).

660788367 is a wasteful number, since it uses less digits than its factorization.

660788367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9576669.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 660788367 is about 25705.8041500358. The cubic root of 660788367 is about 871.0052971593.

The spelling of 660788367 in words is "six hundred sixty million, seven hundred eighty-eight thousand, three hundred sixty-seven".