620461530 has 216 divisors, whose sum is σ = 1859930748. Its totient is φ = 143410176.

The previous prime is 620461507. The next prime is 620461601. The reversal of 620461530 is 35164026.

620461530 is a `hidden beast` number, since 620 + 4 + 6 + 1 + 5 + 30 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 3249 + 620458281 = 57^2 + 24909^2 .

It is a junction number, because it is equal to n+sod(n) for n = 620461494 and 620461503.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 5490754 + ... + 5490866.

Almost surely, 2^620461530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620461530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929965374).

620461530 is an abundant number, since it is smaller than the sum of its proper divisors (1239469218).

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

620461530 is a wasteful number, since it uses less digits than its factorization.

620461530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 620461530 is about 24909.0652173059. The cubic root of 620461530 is about 852.9134305297.

The spelling of 620461530 in words is "six hundred twenty million, four hundred sixty-one thousand, five hundred thirty".