620840383 has 4 divisors (see below), whose sum is σ = 623505168. Its totient is φ = 618175600.

The previous prime is 620840359. The next prime is 620840413. The reversal of 620840383 is 383048026.

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 620840383 - 2⁵ = 620840351 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 (620840183) 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, 1332043 + ... + 1332508.

It is an arithmetic number, because the mean of its divisors is an integer number (155876292).

Almost surely, 2^620840383 is an apocalyptic number.

620840383 is a deficient number, since it is larger than the sum of its proper divisors (2664785).

620840383 is a wasteful number, since it uses less digits than its factorization.

620840383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664784.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 620840383 is about 24916.6687781493. The cubic root of 620840383 is about 853.0869911515.

The spelling of 620840383 in words is "six hundred twenty million, eight hundred forty thousand, three hundred eighty-three".