620854407 has 6 divisors (see below), whose sum is σ = 896789712. Its totient is φ = 413902932.

The previous prime is 620854379. The next prime is 620854411. The reversal of 620854407 is 704458026.

620854407 is a `hidden beast` number, since 6 + 208 + 5 + 440 + 7 = 666.

It is not a de Polignac number, because 620854407 - 2²⁰ = 619805831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620854007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34491903 + ... + 34491920.

It is an arithmetic number, because the mean of its divisors is an integer number (149464952).

Almost surely, 2^620854407 is an apocalyptic number.

620854407 is a deficient number, since it is larger than the sum of its proper divisors (275935305).

620854407 is a wasteful number, since it uses less digits than its factorization.

620854407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68983829 (or 68983826 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 620854407 is about 24916.9501945964. The cubic root of 620854407 is about 853.0934144889.

The spelling of 620854407 in words is "six hundred twenty million, eight hundred fifty-four thousand, four hundred seven".