630515620 has 24 divisors (see below), whose sum is σ = 1513237824. Its totient is φ = 216176736.

The previous prime is 630515609. The next prime is 630515621. The reversal of 630515620 is 26515036.

630515620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (630515621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251702 + ... + 2251981.

It is an arithmetic number, because the mean of its divisors is an integer number (63051576).

Almost surely, 2^630515620 is an apocalyptic number.

It is an amenable number.

630515620 is an abundant number, since it is smaller than the sum of its proper divisors (882722204).

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

630515620 is a wasteful number, since it uses less digits than its factorization.

630515620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503699 (or 4503697 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 630515620 is about 25110.0700914991. The cubic root of 630515620 is about 857.4956981994.

The spelling of 630515620 in words is "six hundred thirty million, five hundred fifteen thousand, six hundred twenty".