630782394 has 64 divisors (see below), whose sum is σ = 1438525440. Its totient is φ = 182689920.

The previous prime is 630782381. The next prime is 630782419. The reversal of 630782394 is 493287036.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131022 + ... + 135750.

It is an arithmetic number, because the mean of its divisors is an integer number (22476960).

Almost surely, 2^630782394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630782394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719262720).

630782394 is an abundant number, since it is smaller than the sum of its proper divisors (807743046).

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

630782394 is a wasteful number, since it uses less digits than its factorization.

630782394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4835.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 630782394 is about 25115.3816216278. The cubic root of 630782394 is about 857.6166179117.

The spelling of 630782394 in words is "six hundred thirty million, seven hundred eighty-two thousand, three hundred ninety-four".