665416151 has 8 divisors (see below), whose sum is σ = 695607264. Its totient is φ = 635330080.

The previous prime is 665416139. The next prime is 665416187. The reversal of 665416151 is 151614566.

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 665416151 - 2¹⁴ = 665399767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665416111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13160 + ... + 38781.

It is an arithmetic number, because the mean of its divisors is an integer number (86950908).

Almost surely, 2^665416151 is an apocalyptic number.

665416151 is a deficient number, since it is larger than the sum of its proper divisors (30191113).

665416151 is a wasteful number, since it uses less digits than its factorization.

665416151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52521.

The product of its digits is 21600, while the sum is 35.

The square root of 665416151 is about 25795.6614763026. The cubic root of 665416151 is about 873.0339098274.

The spelling of 665416151 in words is "six hundred sixty-five million, four hundred sixteen thousand, one hundred fifty-one".