641795527 has 4 divisors (see below), whose sum is σ = 641864376. Its totient is φ = 641726680.

The previous prime is 641795521. The next prime is 641795537. The reversal of 641795527 is 725597146.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 641795527 - 2¹¹ = 641793479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641795521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17749 + ... + 39982.

It is an arithmetic number, because the mean of its divisors is an integer number (160466094).

Almost surely, 2^641795527 is an apocalyptic number.

641795527 is a deficient number, since it is larger than the sum of its proper divisors (68849).

641795527 is a wasteful number, since it uses less digits than its factorization.

641795527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68848.

The product of its digits is 529200, while the sum is 46.

The square root of 641795527 is about 25333.6836445078. The cubic root of 641795527 is about 862.5790288714.

The spelling of 641795527 in words is "six hundred forty-one million, seven hundred ninety-five thousand, five hundred twenty-seven".