620520738 has 32 divisors (see below), whose sum is σ = 1282490880. Its totient is φ = 199946880.

The previous prime is 620520721. The next prime is 620520739. The reversal of 620520738 is 837025026.

It is a junction number, because it is equal to n+sod(n) for n = 620520699 and 620520708.

It is not an unprimeable number, because it can be changed into a prime (620520739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295998 + ... + 298086.

It is an arithmetic number, because the mean of its divisors is an integer number (40077840).

Almost surely, 2^620520738 is an apocalyptic number.

620520738 is an abundant number, since it is smaller than the sum of its proper divisors (661970142).

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

620520738 is a wasteful number, since it uses less digits than its factorization.

620520738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 620520738 is about 24910.2536719320. The cubic root of 620520738 is about 852.9405596316.

The spelling of 620520738 in words is "six hundred twenty million, five hundred twenty thousand, seven hundred thirty-eight".