630850481 has 4 divisors (see below), whose sum is σ = 647900532. Its totient is φ = 613800432.

The previous prime is 630850457. The next prime is 630850487. The reversal of 630850481 is 184058036.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 511166881 + 119683600 = 22609^2 + 10940^2 .

It is a cyclic number.

It is not a de Polignac number, because 630850481 - 2¹⁸ = 630588337 is a prime.

It is a super-2 number, since 2×630850481² = 795944658755862722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630850487) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8524970 + ... + 8525043.

It is an arithmetic number, because the mean of its divisors is an integer number (161975133).

Almost surely, 2^630850481 is an apocalyptic number.

It is an amenable number.

630850481 is a deficient number, since it is larger than the sum of its proper divisors (17050051).

630850481 is a wasteful number, since it uses less digits than its factorization.

630850481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17050050.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 630850481 is about 25116.7370691338. The cubic root of 630850481 is about 857.6474740054.

The spelling of 630850481 in words is "six hundred thirty million, eight hundred fifty thousand, four hundred eighty-one".