630920449 has 8 divisors (see below), whose sum is σ = 637560000. Its totient is φ = 624296592.

The previous prime is 630920443. The next prime is 630920461. The reversal of 630920449 is 944029036.

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 630920449 - 2⁵ = 630920417 is a prime.

It is a super-2 number, since 2×630920449² = 796121225932723202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630920443) 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, 88002 + ... + 94900.

It is an arithmetic number, because the mean of its divisors is an integer number (79695000).

Almost surely, 2^630920449 is an apocalyptic number.

It is an amenable number.

630920449 is a deficient number, since it is larger than the sum of its proper divisors (6639551).

630920449 is a wasteful number, since it uses less digits than its factorization.

630920449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7847.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 630920449 is about 25118.1298865978. The cubic root of 630920449 is about 857.6791802294.

The spelling of 630920449 in words is "six hundred thirty million, nine hundred twenty thousand, four hundred forty-nine".