620622252 has 18 divisors (see below), whose sum is σ = 1568795228. Its totient is φ = 206874072.

The previous prime is 620622229. The next prime is 620622253. The reversal of 620622252 is 252226026.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (620622253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8619718 + ... + 8619789.

Almost surely, 2^620622252 is an apocalyptic number.

It is an amenable number.

620622252 is an abundant number, since it is smaller than the sum of its proper divisors (948172976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620622252 is a wasteful number, since it uses less digits than its factorization.

620622252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17239517 (or 17239512 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 620622252 is about 24912.2911832694. The cubic root of 620622252 is about 852.9870693244.

Adding to 620622252 its reverse (252226026), we get a palindrome (872848278).

The spelling of 620622252 in words is "six hundred twenty million, six hundred twenty-two thousand, two hundred fifty-two".