620626716 has 72 divisors (see below), whose sum is σ = 1657765200. Its totient is φ = 195229440.

The previous prime is 620626693. The next prime is 620626753. The reversal of 620626716 is 617626026.

620626716 is a `hidden beast` number, since 6 + 20 + 626 + 7 + 1 + 6 = 666.

It is a super-2 number, since 2×620626716² = 770355041225889312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190590 + ... + 193818.

Almost surely, 2^620626716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620626716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (828882600).

620626716 is an abundant number, since it is smaller than the sum of its proper divisors (1037138484).

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

620626716 is a wasteful number, since it uses less digits than its factorization.

620626716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539 (or 3534 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 620626716 is about 24912.3807774367. The cubic root of 620626716 is about 852.9891144359.

The spelling of 620626716 in words is "six hundred twenty million, six hundred twenty-six thousand, seven hundred sixteen".