630487819 has 4 divisors (see below), whose sum is σ = 678986896. Its totient is φ = 581988744.

The previous prime is 630487783. The next prime is 630487829. The reversal of 630487819 is 918784036.

It is a happy number.

630487819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 630487819 - 2⁹ = 630487307 is a prime.

It is a super-2 number, since 2×630487819² = 795029779814753522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630487829) 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, 24249519 + ... + 24249544.

It is an arithmetic number, because the mean of its divisors is an integer number (169746724).

Almost surely, 2^630487819 is an apocalyptic number.

630487819 is a deficient number, since it is larger than the sum of its proper divisors (48499077).

630487819 is a wasteful number, since it uses less digits than its factorization.

630487819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48499076.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 630487819 is about 25109.5165027127. The cubic root of 630487819 is about 857.4830949757.

The spelling of 630487819 in words is "six hundred thirty million, four hundred eighty-seven thousand, eight hundred nineteen".