630935640 has 48 divisors (see below), whose sum is σ = 2050542000. Its totient is φ = 168249408.

The previous prime is 630935639. The next prime is 630935651. The reversal of 630935640 is 46539036.

630935640 is a `hidden beast` number, since 6 + 3 + 0 + 9 + 3 + 5 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 630935595 and 630935604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 875940 + ... + 876659.

It is an arithmetic number, because the mean of its divisors is an integer number (42719625).

Almost surely, 2^630935640 is an apocalyptic number.

630935640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630935640 is an abundant number, since it is smaller than the sum of its proper divisors (1419606360).

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

630935640 is a wasteful number, since it uses less digits than its factorization.

630935640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752616 (or 1752609 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 630935640 is about 25118.4322759204. The cubic root of 630935640 is about 857.6860637702.

The spelling of 630935640 in words is "six hundred thirty million, nine hundred thirty-five thousand, six hundred forty".