665127337 has 4 divisors (see below), whose sum is σ = 760145536. Its totient is φ = 570109140.

The previous prime is 665127313. The next prime is 665127373. The reversal of 665127337 is 733721566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 733721566 = 2 ⋅366860783.

It is a cyclic number.

It is not a de Polignac number, because 665127337 - 2¹⁵ = 665094569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 665127337.

It is not an unprimeable number, because it can be changed into a prime (665127377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47509089 + ... + 47509102.

It is an arithmetic number, because the mean of its divisors is an integer number (190036384).

Almost surely, 2^665127337 is an apocalyptic number.

It is an amenable number.

665127337 is a deficient number, since it is larger than the sum of its proper divisors (95018199).

665127337 is an equidigital number, since it uses as much as digits as its factorization.

665127337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95018198.

The product of its digits is 158760, while the sum is 40.

The square root of 665127337 is about 25790.0627568062. The cubic root of 665127337 is about 872.9075824136.

The spelling of 665127337 in words is "six hundred sixty-five million, one hundred twenty-seven thousand, three hundred thirty-seven".