665215006 has 8 divisors (see below), whose sum is σ = 998144784. Its totient is φ = 332500080.

The previous prime is 665214983. The next prime is 665215013. The reversal of 665215006 is 600512566.

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

It is a super-2 number, since 2×665215006² = 885022008415160072, 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, 45735 + ... + 58498.

It is an arithmetic number, because the mean of its divisors is an integer number (124768098).

Almost surely, 2^665215006 is an apocalyptic number.

665215006 is a deficient number, since it is larger than the sum of its proper divisors (332929778).

665215006 is a wasteful number, since it uses less digits than its factorization.

665215006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107426.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 665215006 is about 25791.7623670815. The cubic root of 665215006 is about 872.9459327507.

The spelling of 665215006 in words is "six hundred sixty-five million, two hundred fifteen thousand, six".