662755327609 has 4 divisors (see below), whose sum is σ = 672089909760. Its totient is φ = 653420745460.

The previous prime is 662755327607. The next prime is 662755327679. The reversal of 662755327609 is 906723557266.

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: 906723557266 = 2 ⋅453361778633.

It is a cyclic number.

It is not a de Polignac number, because 662755327609 - 2¹ = 662755327607 is a prime.

It is a super-3 number, since 3×662755327609³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662755327607) 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, 4667290969 + ... + 4667291110.

It is an arithmetic number, because the mean of its divisors is an integer number (168022477440).

Almost surely, 2^662755327609 is an apocalyptic number.

It is an amenable number.

662755327609 is a deficient number, since it is larger than the sum of its proper divisors (9334582151).

662755327609 is an equidigital number, since it uses as much as digits as its factorization.

662755327609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9334582150.

The product of its (nonzero) digits is 28576800, while the sum is 58.

The spelling of 662755327609 in words is "six hundred sixty-two billion, seven hundred fifty-five million, three hundred twenty-seven thousand, six hundred nine".