665061214 has 8 divisors (see below), whose sum is σ = 998417880. Its totient is φ = 332255256.

The previous prime is 665061181. The next prime is 665061247. The reversal of 665061214 is 412160566.

665061214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (665061181) and next prime (665061247).

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

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, 134644 + ... + 139495.

It is an arithmetic number, because the mean of its divisors is an integer number (124802235).

Almost surely, 2^665061214 is an apocalyptic number.

665061214 is a deficient number, since it is larger than the sum of its proper divisors (333356666).

665061214 is a wasteful number, since it uses less digits than its factorization.

665061214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275354.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 665061214 is about 25788.7807776948. The cubic root of 665061214 is about 872.8786550300.

The spelling of 665061214 in words is "six hundred sixty-five million, sixty-one thousand, two hundred fourteen".