630540064 has 96 divisors (see below), whose sum is σ = 1638838656. Its totient is φ = 231198720.

The previous prime is 630540059. The next prime is 630540083. The reversal of 630540064 is 460045036.

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

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, 34362 + ... + 49414.

It is an arithmetic number, because the mean of its divisors is an integer number (17071236).

Almost surely, 2^630540064 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 630540064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819419328).

630540064 is an abundant number, since it is smaller than the sum of its proper divisors (1008298592).

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

630540064 is a wasteful number, since it uses less digits than its factorization.

630540064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15098 (or 15090 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 630540064 is about 25110.5568237743. The cubic root of 630540064 is about 857.5067792645.

The spelling of 630540064 in words is "six hundred thirty million, five hundred forty thousand, sixty-four".