630001405 has 16 divisors (see below), whose sum is σ = 847021824. Its totient is φ = 445798080.

The previous prime is 630001403. The next prime is 630001417. The reversal of 630001405 is 504100036.

It is not a de Polignac number, because 630001405 - 2¹ = 630001403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630001403) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 152757 + ... + 156826.

It is an arithmetic number, because the mean of its divisors is an integer number (52938864).

Almost surely, 2^630001405 is an apocalyptic number.

It is an amenable number.

630001405 is a deficient number, since it is larger than the sum of its proper divisors (217020419).

630001405 is a wasteful number, since it uses less digits than its factorization.

630001405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309636.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 630001405 is about 25099.8287842766. The cubic root of 630001405 is about 857.2625255076.

The spelling of 630001405 in words is "six hundred thirty million, one thousand, four hundred five".