662065609 has 4 divisors (see below), whose sum is σ = 673287120. Its totient is φ = 650844100.

The previous prime is 662065597. The next prime is 662065619. The reversal of 662065609 is 906560266.

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.

It is a cyclic number.

It is not a de Polignac number, because 662065609 - 2¹⁵ = 662032841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662065619) 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, 5610667 + ... + 5610784.

It is an arithmetic number, because the mean of its divisors is an integer number (168321780).

Almost surely, 2^662065609 is an apocalyptic number.

It is an amenable number.

662065609 is a deficient number, since it is larger than the sum of its proper divisors (11221511).

662065609 is a wasteful number, since it uses less digits than its factorization.

662065609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11221510.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 662065609 is about 25730.6356120481. The cubic root of 662065609 is about 871.5661265140.

The spelling of 662065609 in words is "six hundred sixty-two million, sixty-five thousand, six hundred nine".