660538367 has 2 divisors, whose sum is σ = 660538368. Its totient is φ = 660538366.

The previous prime is 660538339. The next prime is 660538391. The reversal of 660538367 is 763835066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660538367 - 2²² = 656344063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660538337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330269183 + 330269184.

It is an arithmetic number, because the mean of its divisors is an integer number (330269184).

Almost surely, 2^660538367 is an apocalyptic number.

660538367 is a deficient number, since it is larger than the sum of its proper divisors (1).

660538367 is an equidigital number, since it uses as much as digits as its factorization.

660538367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 660538367 is about 25700.9409749916. The cubic root of 660538367 is about 870.8954390958.

The spelling of 660538367 in words is "six hundred sixty million, five hundred thirty-eight thousand, three hundred sixty-seven".