620544406 has 8 divisors (see below), whose sum is σ = 931268880. Its totient is φ = 310121448.

The previous prime is 620544371. The next prime is 620544413. The reversal of 620544406 is 604445026.

620544406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70161 + ... + 78508.

It is an arithmetic number, because the mean of its divisors is an integer number (116408610).

Almost surely, 2^620544406 is an apocalyptic number.

620544406 is a deficient number, since it is larger than the sum of its proper divisors (310724474).

620544406 is a wasteful number, since it uses less digits than its factorization.

620544406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150758.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 620544406 is about 24910.7287328171. The cubic root of 620544406 is about 852.9514038249.

The spelling of 620544406 in words is "six hundred twenty million, five hundred forty-four thousand, four hundred six".