665711006 has 8 divisors (see below), whose sum is σ = 998947560. Its totient is φ = 332728488.

The previous prime is 665711003. The next prime is 665711009. The reversal of 665711006 is 600117566.

It is an interprime number because it is at equal distance from previous prime (665711003) and next prime (665711009).

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

It is a super-2 number, since 2×665711006² = 886342287019064072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665711003) 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 3 ways as a sum of consecutive naturals, for example, 56816 + ... + 67523.

It is an arithmetic number, because the mean of its divisors is an integer number (124868445).

Almost surely, 2^665711006 is an apocalyptic number.

665711006 is a deficient number, since it is larger than the sum of its proper divisors (333236554).

665711006 is a wasteful number, since it uses less digits than its factorization.

665711006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127018.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 665711006 is about 25801.3760485754. The cubic root of 665711006 is about 873.1628418752.

The spelling of 665711006 in words is "six hundred sixty-five million, seven hundred eleven thousand, six".