641350620 has 36 divisors (see below), whose sum is σ = 1945430760. Its totient is φ = 171026784.

The previous prime is 641350609. The next prime is 641350651. The reversal of 641350620 is 26053146.

641350620 is a `hidden beast` number, since 6 + 4 + 1 + 35 + 0 + 620 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×641350620² = 822661235548768800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1781350 + ... + 1781709.

Almost surely, 2^641350620 is an apocalyptic number.

641350620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

641350620 is an abundant number, since it is smaller than the sum of its proper divisors (1304080140).

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

641350620 is a wasteful number, since it uses less digits than its factorization.

641350620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563074 (or 3563069 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 641350620 is about 25324.9011844074. The cubic root of 641350620 is about 862.3796631104.

The spelling of 641350620 in words is "six hundred forty-one million, three hundred fifty thousand, six hundred twenty".