620888880 has 80 divisors (see below), whose sum is σ = 1931063904. Its totient is φ = 165027840.

The previous prime is 620888867. The next prime is 620888881. The reversal of 620888880 is 88888026.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (620888881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72000 + ... + 80160.

Almost surely, 2^620888880 is an apocalyptic number.

620888880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620888880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965531952).

620888880 is an abundant number, since it is smaller than the sum of its proper divisors (1310175024).

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

620888880 is a wasteful number, since it uses less digits than its factorization.

620888880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8494 (or 8488 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 48.

The square root of 620888880 is about 24917.6419430090. The cubic root of 620888880 is about 853.1092035610.

The spelling of 620888880 in words is "six hundred twenty million, eight hundred eighty-eight thousand, eight hundred eighty".