620107447 has 4 divisors (see below), whose sum is σ = 620275320. Its totient is φ = 619939576.

The previous prime is 620107441. The next prime is 620107469. The reversal of 620107447 is 744701026.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744701026 = 2 ⋅372350513.

It is a cyclic number.

It is not a de Polignac number, because 620107447 - 2²³ = 611718839 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 (620107441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78268 + ... + 85825.

It is an arithmetic number, because the mean of its divisors is an integer number (155068830).

Almost surely, 2^620107447 is an apocalyptic number.

620107447 is a deficient number, since it is larger than the sum of its proper divisors (167873).

620107447 is a wasteful number, since it uses less digits than its factorization.

620107447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167872.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 620107447 is about 24901.9566901880. The cubic root of 620107447 is about 852.7511536877.

The spelling of 620107447 in words is "six hundred twenty million, one hundred seven thousand, four hundred forty-seven".