620001311 has 4 divisors (see below), whose sum is σ = 620234232. Its totient is φ = 619768392.

The previous prime is 620001301. The next prime is 620001313. The reversal of 620001311 is 113100026.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 620001311 - 2⁶ = 620001247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620001313) 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, 112421 + ... + 117806.

It is an arithmetic number, because the mean of its divisors is an integer number (155058558).

Almost surely, 2^620001311 is an apocalyptic number.

620001311 is a deficient number, since it is larger than the sum of its proper divisors (232921).

620001311 is a wasteful number, since it uses less digits than its factorization.

620001311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232920.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 620001311 is about 24899.8255214771. The cubic root of 620001311 is about 852.7024993450.

Adding to 620001311 its reverse (113100026), we get a palindrome (733101337).

The spelling of 620001311 in words is "six hundred twenty million, one thousand, three hundred eleven".