641306265 has 16 divisors (see below), whose sum is σ = 1027608768. Its totient is φ = 341523776.

The previous prime is 641306233. The next prime is 641306273. The reversal of 641306265 is 562603146.

641306265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 641306265 - 2⁵ = 641306233 is a prime.

It is a super-2 number, since 2×641306265² = 822547451056500450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21054 + ... + 41543.

It is an arithmetic number, because the mean of its divisors is an integer number (64225548).

Almost surely, 2^641306265 is an apocalyptic number.

It is an amenable number.

641306265 is a deficient number, since it is larger than the sum of its proper divisors (386302503).

641306265 is a wasteful number, since it uses less digits than its factorization.

641306265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63288.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 641306265 is about 25324.0254501531. The cubic root of 641306265 is about 862.3597822888.

The spelling of 641306265 in words is "six hundred forty-one million, three hundred six thousand, two hundred sixty-five".