620075440 has 20 divisors (see below), whose sum is σ = 1441675584. Its totient is φ = 248030144.

The previous prime is 620075383. The next prime is 620075453. The reversal of 620075440 is 44570026.

620075440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 620075399 and 620075408.

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, 3875392 + ... + 3875551.

Almost surely, 2^620075440 is an apocalyptic number.

It is an amenable number.

620075440 is an abundant number, since it is smaller than the sum of its proper divisors (821600144).

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

620075440 is a wasteful number, since it uses less digits than its factorization.

620075440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7750956 (or 7750950 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 620075440 is about 24901.3140215532. The cubic root of 620075440 is about 852.7364817810.

The spelling of 620075440 in words is "six hundred twenty million, seventy-five thousand, four hundred forty".