660371 has 6 divisors (see below), whose sum is σ = 674916. Its totient is φ = 646100.

The previous prime is 660367. The next prime is 660377. The reversal of 660371 is 173066.

It is not a de Polignac number, because 660371 - 2² = 660367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660377) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4976 + ... + 5106.

It is an arithmetic number, because the mean of its divisors is an integer number (112486).

2⁶⁶⁰³⁷¹ is an apocalyptic number.

660371 is a deficient number, since it is larger than the sum of its proper divisors (14545).

660371 is an equidigital number, since it uses as much as digits as its factorization.

660371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 660371 is about 812.6321431004. The cubic root of 660371 is about 87.0821877147.

The spelling of 660371 in words is "six hundred sixty thousand, three hundred seventy-one".