620203665 has 8 divisors (see below), whose sum is σ = 992325888. Its totient is φ = 330775280.

The previous prime is 620203631. The next prime is 620203667. The reversal of 620203665 is 566302026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 620203665 - 2²⁵ = 586649233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620203667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20673441 + ... + 20673470.

It is an arithmetic number, because the mean of its divisors is an integer number (124040736).

Almost surely, 2^620203665 is an apocalyptic number.

It is an amenable number.

620203665 is a deficient number, since it is larger than the sum of its proper divisors (372122223).

620203665 is a wasteful number, since it uses less digits than its factorization.

620203665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41346919.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 620203665 is about 24903.8885517905. Note that the first 3 decimals coincide. The cubic root of 620203665 is about 852.7952566721.

The spelling of 620203665 in words is "six hundred twenty million, two hundred three thousand, six hundred sixty-five".