665230143 has 8 divisors (see below), whose sum is σ = 897660288. Its totient is φ = 438143384.

The previous prime is 665230129. The next prime is 665230157. The reversal of 665230143 is 341032566.

It is an interprime number because it is at equal distance from previous prime (665230129) and next prime (665230157).

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 665230143 - 2⁶ = 665230079 is a prime.

It is a super-2 number, since 2×665230143² = 885062286311600898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 665230143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665230123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335555 + ... + 1336052.

It is an arithmetic number, because the mean of its divisors is an integer number (112207536).

Almost surely, 2^665230143 is an apocalyptic number.

665230143 is a deficient number, since it is larger than the sum of its proper divisors (232430145).

665230143 is a wasteful number, since it uses less digits than its factorization.

665230143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671693.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 665230143 is about 25792.0558118193. The cubic root of 665230143 is about 872.9525540096.

The spelling of 665230143 in words is "six hundred sixty-five million, two hundred thirty thousand, one hundred forty-three".