665627 has 8 divisors (see below), whose sum is σ = 714960. Its totient is φ = 617760.

The previous prime is 665617. The next prime is 665629. The reversal of 665627 is 726566.

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 665627 - 2⁶ = 665563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665593 and 665602.

It is not an unprimeable number, because it can be changed into a prime (665629) 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, 677 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (89370).

2⁶⁶⁵⁶²⁷ is an apocalyptic number.

665627 is a deficient number, since it is larger than the sum of its proper divisors (49333).

665627 is a wasteful number, since it uses less digits than its factorization.

665627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its digits is 15120, while the sum is 32.

The square root of 665627 is about 815.8596693059. The cubic root of 665627 is about 87.3126112222.

The spelling of 665627 in words is "six hundred sixty-five thousand, six hundred twenty-seven".