665347627 has 16 divisors (see below), whose sum is σ = 777240000. Its totient is φ = 569325120.

The previous prime is 665347601. The next prime is 665347633. The reversal of 665347627 is 726743566.

665347627 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 665347627 - 2²³ = 656959019 is a prime.

It is a super-3 number, since 3×665347627³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665347687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259749 + ... + 262297.

It is an arithmetic number, because the mean of its divisors is an integer number (48577500).

Almost surely, 2^665347627 is an apocalyptic number.

665347627 is a deficient number, since it is larger than the sum of its proper divisors (111892373).

665347627 is an equidigital number, since it uses as much as digits as its factorization.

665347627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331 (or 3317 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 46.

The square root of 665347627 is about 25794.3332342590. Note that the first 3 decimals coincide. The cubic root of 665347627 is about 873.0039406974.

The spelling of 665347627 in words is "six hundred sixty-five million, three hundred forty-seven thousand, six hundred twenty-seven".