630523401 has 16 divisors (see below), whose sum is σ = 866410944. Its totient is φ = 407571264.

The previous prime is 630523393. The next prime is 630523409. The reversal of 630523401 is 104325036.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (630523393) and next prime (630523409).

It is not a de Polignac number, because 630523401 - 2³ = 630523393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630523409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22830 + ... + 42216.

It is an arithmetic number, because the mean of its divisors is an integer number (54150684).

Almost surely, 2^630523401 is an apocalyptic number.

It is an amenable number.

630523401 is a deficient number, since it is larger than the sum of its proper divisors (235887543).

630523401 is a wasteful number, since it uses less digits than its factorization.

630523401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19720.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 630523401 is about 25110.2250288603. The cubic root of 630523401 is about 857.4992255487.

Adding to 630523401 its reverse (104325036), we get a palindrome (734848437).

The spelling of 630523401 in words is "six hundred thirty million, five hundred twenty-three thousand, four hundred one".