620277065609 has 4 divisors (see below), whose sum is σ = 621677240016. Its totient is φ = 618876891204.

The previous prime is 620277065581. The next prime is 620277065651. The reversal of 620277065609 is 906560772026.

It is a happy number.

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 620277065609 - 2²⁰ = 620276017033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620277065509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700086539 + ... + 700087424.

It is an arithmetic number, because the mean of its divisors is an integer number (155419310004).

Almost surely, 2^620277065609 is an apocalyptic number.

It is an amenable number.

620277065609 is a deficient number, since it is larger than the sum of its proper divisors (1400174407).

620277065609 is a wasteful number, since it uses less digits than its factorization.

620277065609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400174406.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 620277065609 in words is "six hundred twenty billion, two hundred seventy-seven million, sixty-five thousand, six hundred nine".