620426720 has 24 divisors (see below), whose sum is σ = 1465758504. Its totient is φ = 248170624.

The previous prime is 620426701. The next prime is 620426749. The reversal of 620426720 is 27624026.

It is a congruent number.

It is an unprimeable number.

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, 1938674 + ... + 1938993.

It is an arithmetic number, because the mean of its divisors is an integer number (61073271).

Almost surely, 2^620426720 is an apocalyptic number.

It is an amenable number.

620426720 is an abundant number, since it is smaller than the sum of its proper divisors (845331784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620426720 is a wasteful number, since it uses less digits than its factorization.

620426720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877682 (or 3877674 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 620426720 is about 24908.3664659086. The cubic root of 620426720 is about 852.8974797842.

The spelling of 620426720 in words is "six hundred twenty million, four hundred twenty-six thousand, seven hundred twenty".