620436311 has 4 divisors (see below), whose sum is σ = 676839624. Its totient is φ = 564033000.

The previous prime is 620436287. The next prime is 620436319. The reversal of 620436311 is 113634026.

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 620436311 - 2¹⁴ = 620419927 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 (620436319) 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, 28201640 + ... + 28201661.

It is an arithmetic number, because the mean of its divisors is an integer number (169209906).

Almost surely, 2^620436311 is an apocalyptic number.

620436311 is a deficient number, since it is larger than the sum of its proper divisors (56403313).

620436311 is a wasteful number, since it uses less digits than its factorization.

620436311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56403312.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 620436311 is about 24908.5589908369. The cubic root of 620436311 is about 852.9018746613.

The spelling of 620436311 in words is "six hundred twenty million, four hundred thirty-six thousand, three hundred eleven".