620641080 has 192 divisors, whose sum is σ = 2192486400. Its totient is φ = 151683840.

The previous prime is 620641057. The next prime is 620641081. The reversal of 620641080 is 80146026.

620641080 = T₃₀ + T₃₁ + ... + T₁₅₄₉.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620641081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 210577 + ... + 213503.

It is an arithmetic number, because the mean of its divisors is an integer number (11419200).

Almost surely, 2^620641080 is an apocalyptic number.

620641080 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 620641080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096243200).

620641080 is an abundant number, since it is smaller than the sum of its proper divisors (1571845320).

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

620641080 is a wasteful number, since it uses less digits than its factorization.

620641080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994 (or 2987 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 620641080 is about 24912.6690661599. The cubic root of 620641080 is about 852.9956950104.

The spelling of 620641080 in words is "six hundred twenty million, six hundred forty-one thousand, eighty".