641162441 has 4 divisors (see below), whose sum is σ = 641258772. Its totient is φ = 641066112.

The previous prime is 641162419. The next prime is 641162449. The reversal of 641162441 is 144261146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 316982416 + 324180025 = 17804^2 + 18005^2 .

It is a cyclic number.

It is not a de Polignac number, because 641162441 - 2⁶ = 641162377 is a prime.

It is a super-2 number, since 2×641162441² = 822178551498156962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641162449) 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, 37376 + ... + 51761.

It is an arithmetic number, because the mean of its divisors is an integer number (160314693).

Almost surely, 2^641162441 is an apocalyptic number.

It is an amenable number.

641162441 is a deficient number, since it is larger than the sum of its proper divisors (96331).

641162441 is an equidigital number, since it uses as much as digits as its factorization.

641162441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96330.

The product of its digits is 4608, while the sum is 29.

The square root of 641162441 is about 25321.1856160015. The cubic root of 641162441 is about 862.2953111133.

The spelling of 641162441 in words is "six hundred forty-one million, one hundred sixty-two thousand, four hundred forty-one".