660342211 has 8 divisors (see below), whose sum is σ = 676699920. Its totient is φ = 644128992.

The previous prime is 660342181. The next prime is 660342217. The reversal of 660342211 is 112243066.

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 660342211 - 2¹³ = 660334019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660342217) 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, 26841 + ... + 45178.

It is an arithmetic number, because the mean of its divisors is an integer number (84587490).

Almost surely, 2^660342211 is an apocalyptic number.

660342211 is a deficient number, since it is larger than the sum of its proper divisors (16357709).

660342211 is a wasteful number, since it uses less digits than its factorization.

660342211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72245.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 660342211 is about 25697.1245667682. The cubic root of 660342211 is about 870.8092224139.

Adding to 660342211 its reverse (112243066), we get a palindrome (772585277).

The spelling of 660342211 in words is "six hundred sixty million, three hundred forty-two thousand, two hundred eleven".