620040044 has 18 divisors (see below), whose sum is σ = 1174958820. Its totient is φ = 286172016.

The previous prime is 620040013. The next prime is 620040067. The reversal of 620040044 is 440040026.

It is a junction number, because it is equal to n+sod(n) for n = 620039998 and 620040025.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 457934 + ... + 459285.

It is an arithmetic number, because the mean of its divisors is an integer number (65275490).

Almost surely, 2^620040044 is an apocalyptic number.

It is an amenable number.

620040044 is a deficient number, since it is larger than the sum of its proper divisors (554918776).

620040044 is a wasteful number, since it uses less digits than its factorization.

620040044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917249 (or 917234 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 620040044 is about 24900.6032858644. The cubic root of 620040044 is about 852.7202557796.

The spelling of 620040044 in words is "six hundred twenty million, forty thousand, forty-four".