620535516 has 48 divisors (see below), whose sum is σ = 1539269760. Its totient is φ = 194011200.

The previous prime is 620535491. The next prime is 620535521. The reversal of 620535516 is 615535026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9555 + ... + 36501.

It is an arithmetic number, because the mean of its divisors is an integer number (32068120).

Almost surely, 2^620535516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620535516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769634880).

620535516 is an abundant number, since it is smaller than the sum of its proper divisors (918734244).

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

620535516 is a wasteful number, since it uses less digits than its factorization.

620535516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27074 (or 27072 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 620535516 is about 24910.5502950055. The cubic root of 620535516 is about 852.9473306411.

The spelling of 620535516 in words is "six hundred twenty million, five hundred thirty-five thousand, five hundred sixteen".