620344080 has 60 divisors (see below), whose sum is σ = 2083324620. Its totient is φ = 165424896.

The previous prime is 620344079. The next prime is 620344097. The reversal of 620344080 is 80443026.

620344080 is a `hidden beast` number, since 620 + 34 + 4 + 0 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 385886736 + 234457344 = 19644^2 + 15312^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430075 + ... + 431514.

It is an arithmetic number, because the mean of its divisors is an integer number (34722077).

Almost surely, 2^620344080 is an apocalyptic number.

620344080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620344080 is an abundant number, since it is smaller than the sum of its proper divisors (1462980540).

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

620344080 is a wasteful number, since it uses less digits than its factorization.

620344080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861608 (or 861599 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 620344080 is about 24906.7075303020. The cubic root of 620344080 is about 852.8596098392.

The spelling of 620344080 in words is "six hundred twenty million, three hundred forty-four thousand, eighty".