630965451 has 4 divisors (see below), whose sum is σ = 841287272. Its totient is φ = 420643632.

The previous prime is 630965449. The next prime is 630965473. The reversal of 630965451 is 154569036.

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

It is not a de Polignac number, because 630965451 - 2¹ = 630965449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630965051) 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, 105160906 + ... + 105160911.

It is an arithmetic number, because the mean of its divisors is an integer number (210321818).

Almost surely, 2^630965451 is an apocalyptic number.

630965451 is a deficient number, since it is larger than the sum of its proper divisors (210321821).

630965451 is a wasteful number, since it uses less digits than its factorization.

630965451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210321820.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 630965451 is about 25119.0256777607. The cubic root of 630965451 is about 857.6995717917.

The spelling of 630965451 in words is "six hundred thirty million, nine hundred sixty-five thousand, four hundred fifty-one".