665674151 has 8 divisors (see below), whose sum is σ = 716387184. Its totient is φ = 616245120.

The previous prime is 665674147. The next prime is 665674153. The reversal of 665674151 is 151476566.

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 665674151 - 2² = 665674147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665674099 and 665674108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665674153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319925 + ... + 321998.

It is an arithmetic number, because the mean of its divisors is an integer number (89548398).

Almost surely, 2^665674151 is an apocalyptic number.

665674151 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

665674151 is a deficient number, since it is larger than the sum of its proper divisors (50713033).

665674151 is a wasteful number, since it uses less digits than its factorization.

665674151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642001.

The product of its digits is 151200, while the sum is 41.

The square root of 665674151 is about 25800.6618325965. The cubic root of 665674151 is about 873.1467282712.

The spelling of 665674151 in words is "six hundred sixty-five million, six hundred seventy-four thousand, one hundred fifty-one".