620762688 has 252 divisors, whose sum is σ = 2204362368. Its totient is φ = 163537920.

The previous prime is 620762687. The next prime is 620762717. The reversal of 620762688 is 886267026.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (252).

It is not an unprimeable number, because it can be changed into a prime (620762687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 680953 + ... + 681863.

Almost surely, 2^620762688 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 620762688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102181184).

620762688 is an abundant number, since it is smaller than the sum of its proper divisors (1583599680).

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

620762688 is a wasteful number, since it uses less digits than its factorization.

620762688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 620762688 is about 24915.1096325101. The cubic root of 620762688 is about 853.0514031750.

The spelling of 620762688 in words is "six hundred twenty million, seven hundred sixty-two thousand, six hundred eighty-eight".