630562421 has 4 divisors (see below), whose sum is σ = 630653100. Its totient is φ = 630471744.

The previous prime is 630562417. The next prime is 630562423. The reversal of 630562421 is 124265036.

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 8059921 + 622502500 = 2839^2 + 24950^2 .

It is a cyclic number.

It is not a de Polignac number, because 630562421 - 2² = 630562417 is a prime.

It is a super-3 number, since 3×630562421³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630562423) 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 3 ways as a sum of consecutive naturals, for example, 33956 + ... + 49133.

It is an arithmetic number, because the mean of its divisors is an integer number (157663275).

Almost surely, 2^630562421 is an apocalyptic number.

It is an amenable number.

630562421 is a deficient number, since it is larger than the sum of its proper divisors (90679).

630562421 is an equidigital number, since it uses as much as digits as its factorization.

630562421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90678.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 630562421 is about 25111.0019911592. The cubic root of 630562421 is about 857.5169139906.

The spelling of 630562421 in words is "six hundred thirty million, five hundred sixty-two thousand, four hundred twenty-one".