630833780 has 24 divisors (see below), whose sum is σ = 1339639560. Its totient is φ = 249497600.

The previous prime is 630833771. The next prime is 630833813. The reversal of 630833780 is 87338036.

It can be written as a sum of positive squares in 4 ways, for example, as 22619536 + 608214244 = 4756^2 + 24662^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175421 + ... + 178980.

It is an arithmetic number, because the mean of its divisors is an integer number (55818315).

Almost surely, 2^630833780 is an apocalyptic number.

It is an amenable number.

630833780 is an abundant number, since it is smaller than the sum of its proper divisors (708805780).

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

630833780 is a wasteful number, since it uses less digits than its factorization.

630833780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354499 (or 354497 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 630833780 is about 25116.4045993848. The cubic root of 630833780 is about 857.6399055470.

The spelling of 630833780 in words is "six hundred thirty million, eight hundred thirty-three thousand, seven hundred eighty".