320623630 has 8 divisors (see below), whose sum is σ = 577122552. Its totient is φ = 128249448.

The previous prime is 320623619. The next prime is 320623631. The reversal of 320623630 is 36326023.

320623630 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×320623630² = 205599024228753800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320623595 and 320623604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320623631) 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, 16031172 + ... + 16031191.

It is an arithmetic number, because the mean of its divisors is an integer number (72140319).

Almost surely, 2^320623630 is an apocalyptic number.

320623630 is a deficient number, since it is larger than the sum of its proper divisors (256498922).

320623630 is a wasteful number, since it uses less digits than its factorization.

320623630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32062370.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 320623630 is about 17905.9663241055. The cubic root of 320623630 is about 684.4344204643.

Adding to 320623630 its reverse (36326023), we get a palindrome (356949653).

The spelling of 320623630 in words is "three hundred twenty million, six hundred twenty-three thousand, six hundred thirty".