630405323460 has 72 divisors (see below), whose sum is σ = 2086068531456. Its totient is φ = 152825532480.

The previous prime is 630405323423. The next prime is 630405323489. The reversal of 630405323460 is 64323504036.

630405323460 is a `hidden beast` number, since 6 + 30 + 4 + 0 + 532 + 34 + 60 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159191284 + ... + 159195243.

It is an arithmetic number, because the mean of its divisors is an integer number (28973174048).

Almost surely, 2^630405323460 is an apocalyptic number.

630405323460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630405323460 is an abundant number, since it is smaller than the sum of its proper divisors (1455663207996).

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

630405323460 is a wasteful number, since it uses less digits than its factorization.

630405323460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318386553 (or 318386548 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

Adding to 630405323460 its reverse (64323504036), we get a palindrome (694728827496).

The spelling of 630405323460 in words is "six hundred thirty billion, four hundred five million, three hundred twenty-three thousand, four hundred sixty".