630204401 has 4 divisors (see below), whose sum is σ = 638837412. Its totient is φ = 621571392.

The previous prime is 630204391. The next prime is 630204403. The reversal of 630204401 is 104402036.

It is a happy number.

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 112869376 + 517335025 = 10624^2 + 22745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630204401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630204403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4316396 + ... + 4316541.

It is an arithmetic number, because the mean of its divisors is an integer number (159709353).

Almost surely, 2^630204401 is an apocalyptic number.

It is an amenable number.

630204401 is a deficient number, since it is larger than the sum of its proper divisors (8633011).

630204401 is an equidigital number, since it uses as much as digits as its factorization.

630204401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633010.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 630204401 is about 25103.8722311917. The cubic root of 630204401 is about 857.3545899458.

Adding to 630204401 its reverse (104402036), we get a palindrome (734606437).

The spelling of 630204401 in words is "six hundred thirty million, two hundred four thousand, four hundred one".