630323405 has 4 divisors (see below), whose sum is σ = 756388092. Its totient is φ = 504258720.

The previous prime is 630323401. The next prime is 630323413. The reversal of 630323405 is 504323036.

630323405 is digitally balanced in base 6, 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 can be written as a sum of positive squares in 2 ways, for example, as 470629636 + 159693769 = 21694^2 + 12637^2 .

It is not a de Polignac number, because 630323405 - 2² = 630323401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630323401) 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, 63032336 + ... + 63032345.

It is an arithmetic number, because the mean of its divisors is an integer number (189097023).

Almost surely, 2^630323405 is an apocalyptic number.

It is an amenable number.

630323405 is a deficient number, since it is larger than the sum of its proper divisors (126064687).

630323405 is a wasteful number, since it uses less digits than its factorization.

630323405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126064686.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 630323405 is about 25106.2423512560. The cubic root of 630323405 is about 857.4085524400.

The spelling of 630323405 in words is "six hundred thirty million, three hundred twenty-three thousand, four hundred five".