620622663 has 8 divisors (see below), whose sum is σ = 832574208. Its totient is φ = 411209784.

The previous prime is 620622647. The next prime is 620622671. The reversal of 620622663 is 366226026.

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

It is not a de Polignac number, because 620622663 - 2⁴ = 620622647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620622463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634095 + ... + 635072.

It is an arithmetic number, because the mean of its divisors is an integer number (104071776).

Almost surely, 2^620622663 is an apocalyptic number.

620622663 is a deficient number, since it is larger than the sum of its proper divisors (211951545).

620622663 is a wasteful number, since it uses less digits than its factorization.

620622663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269333.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 620622663 is about 24912.2994322082. The cubic root of 620622663 is about 852.9872576180.

Adding to 620622663 its reverse (366226026), we get a palindrome (986848689).

The spelling of 620622663 in words is "six hundred twenty million, six hundred twenty-two thousand, six hundred sixty-three".