665006515 has 8 divisors (see below), whose sum is σ = 800609040. Its totient is φ = 530271072.

The previous prime is 665006501. The next prime is 665006543. The reversal of 665006515 is 515600566.

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 665006515 - 2⁷ = 665006387 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215080 + ... + 218149.

It is an arithmetic number, because the mean of its divisors is an integer number (100076130).

Almost surely, 2^665006515 is an apocalyptic number.

665006515 is a deficient number, since it is larger than the sum of its proper divisors (135602525).

665006515 is a wasteful number, since it uses less digits than its factorization.

665006515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433541.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 665006515 is about 25787.7202365777. The cubic root of 665006515 is about 872.8547239504.

The spelling of 665006515 in words is "six hundred sixty-five million, six thousand, five hundred fifteen".