641102365 has 4 divisors (see below), whose sum is σ = 769322844. Its totient is φ = 512881888.

The previous prime is 641102347. The next prime is 641102393. The reversal of 641102365 is 563201146.

641102365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563201146 = 2 ⋅281600573.

It can be written as a sum of positive squares in 2 ways, for example, as 413756281 + 227346084 = 20341^2 + 15078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641102365 is a prime.

It is a super-2 number, since 2×641102365² = 822024484817186450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64110232 + ... + 64110241.

It is an arithmetic number, because the mean of its divisors is an integer number (192330711).

Almost surely, 2^641102365 is an apocalyptic number.

It is an amenable number.

641102365 is a deficient number, since it is larger than the sum of its proper divisors (128220479).

641102365 is a wasteful number, since it uses less digits than its factorization.

641102365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128220478.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 641102365 is about 25319.9993088468. Note that the first 3 decimals coincide. The cubic root of 641102365 is about 862.2683783280.

The spelling of 641102365 in words is "six hundred forty-one million, one hundred two thousand, three hundred sixty-five".