630965453 has 4 divisors (see below), whose sum is σ = 631055868. Its totient is φ = 630875040.

The previous prime is 630965449. The next prime is 630965473. The reversal of 630965453 is 354569036.

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 554979364 + 75986089 = 23558^2 + 8717^2 .

It is a cyclic number.

It is not a de Polignac number, because 630965453 - 2² = 630965449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630965453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630965473) 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, 33776 + ... + 49017.

It is an arithmetic number, because the mean of its divisors is an integer number (157763967).

Almost surely, 2^630965453 is an apocalyptic number.

It is an amenable number.

630965453 is a deficient number, since it is larger than the sum of its proper divisors (90415).

630965453 is an equidigital number, since it uses as much as digits as its factorization.

630965453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90414.

The product of its (nonzero) digits is 291600, while the sum is 41.

The square root of 630965453 is about 25119.0257175711. The cubic root of 630965453 is about 857.6995726979.

The spelling of 630965453 in words is "six hundred thirty million, nine hundred sixty-five thousand, four hundred fifty-three".