1665206006 has 8 divisors (see below), whose sum is σ = 2498396400. Its totient is φ = 832407208.

The previous prime is 1665205987. The next prime is 1665206017. The reversal of 1665206006 is 6006025661.

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

It is a super-2 number, since 2×1665206006² = 5545822084836944072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87026 + ... + 104421.

It is an arithmetic number, because the mean of its divisors is an integer number (312299550).

Almost surely, 2^1665206006 is an apocalyptic number.

1665206006 is a deficient number, since it is larger than the sum of its proper divisors (833190394).

1665206006 is a wasteful number, since it uses less digits than its factorization.

1665206006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195798.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1665206006 is about 40806.9357585203. The cubic root of 1665206006 is about 1185.2846393212.

The spelling of 1665206006 in words is "one billion, six hundred sixty-five million, two hundred six thousand, six".