665131151 has 8 divisors (see below), whose sum is σ = 681699984. Its totient is φ = 648578880.

The previous prime is 665131141. The next prime is 665131183. The reversal of 665131151 is 151131566.

665131151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 665131151 - 2¹⁰ = 665130127 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 (665131141) 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, 130880 + ... + 135866.

It is an arithmetic number, because the mean of its divisors is an integer number (85212498).

Almost surely, 2^665131151 is an apocalyptic number.

665131151 is a deficient number, since it is larger than the sum of its proper divisors (16568833).

665131151 is a wasteful number, since it uses less digits than its factorization.

665131151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8281.

The product of its digits is 2700, while the sum is 29.

The square root of 665131151 is about 25790.1366999091. The cubic root of 665131151 is about 872.9092508977.

The spelling of 665131151 in words is "six hundred sixty-five million, one hundred thirty-one thousand, one hundred fifty-one".