620630945 has 8 divisors (see below), whose sum is σ = 812462400. Its totient is φ = 451367920.

The previous prime is 620630869. The next prime is 620630947. The reversal of 620630945 is 549036026.

620630945 is digitally balanced in base 2, 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 not a de Polignac number, because 620630945 - 2²² = 616436641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620630947) 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, 5642045 + ... + 5642154.

It is an arithmetic number, because the mean of its divisors is an integer number (101557800).

Almost surely, 2^620630945 is an apocalyptic number.

It is an amenable number.

620630945 is a deficient number, since it is larger than the sum of its proper divisors (191831455).

620630945 is a wasteful number, since it uses less digits than its factorization.

620630945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11284215.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 620630945 is about 24912.4656547681. The cubic root of 620630945 is about 852.9910518768.

The spelling of 620630945 in words is "six hundred twenty million, six hundred thirty thousand, nine hundred forty-five".