630629451 has 12 divisors (see below), whose sum is σ = 911238328. Its totient is φ = 420267744.

The previous prime is 630629413. The next prime is 630629453. The reversal of 630629451 is 154926036.

It is a happy number.

It is not a de Polignac number, because 630629451 - 2¹⁵ = 630596683 is a prime.

It is a super-2 number, since 2×630629451² = 795387008937122802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630629453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17391 + ... + 39543.

Almost surely, 2^630629451 is an apocalyptic number.

630629451 is a deficient number, since it is larger than the sum of its proper divisors (280608877).

630629451 is a wasteful number, since it uses less digits than its factorization.

630629451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25322 (or 25319 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 630629451 is about 25112.3366296329. The cubic root of 630629451 is about 857.5472981473.

The spelling of 630629451 in words is "six hundred thirty million, six hundred twenty-nine thousand, four hundred fifty-one".