630445351 has 8 divisors (see below), whose sum is σ = 634871808. Its totient is φ = 626031000.

The previous prime is 630445337. The next prime is 630445421. The reversal of 630445351 is 153544036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 630445351 - 2⁹ = 630444839 is a prime.

It is a super-2 number, since 2×630445351² = 794922681195026402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630745351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117906 + ... + 123136.

It is an arithmetic number, because the mean of its divisors is an integer number (79358976).

Almost surely, 2^630445351 is an apocalyptic number.

630445351 is a deficient number, since it is larger than the sum of its proper divisors (4426457).

630445351 is a wasteful number, since it uses less digits than its factorization.

630445351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6053.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 630445351 is about 25108.6708330011. The cubic root of 630445351 is about 857.4638419419.

Adding to 630445351 its reverse (153544036), we get a palindrome (783989387).

The spelling of 630445351 in words is "six hundred thirty million, four hundred forty-five thousand, three hundred fifty-one".