641122361 has 4 divisors (see below), whose sum is σ = 699406224. Its totient is φ = 582838500.

The previous prime is 641122357. The next prime is 641122387. The reversal of 641122361 is 163221146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 641122361 - 2² = 641122357 is a prime.

It is a super-2 number, since 2×641122361² = 822075763548428642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641122361.

It is not an unprimeable number, because it can be changed into a prime (641122061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29141915 + ... + 29141936.

It is an arithmetic number, because the mean of its divisors is an integer number (174851556).

Almost surely, 2^641122361 is an apocalyptic number.

It is an amenable number.

641122361 is a deficient number, since it is larger than the sum of its proper divisors (58283863).

641122361 is a wasteful number, since it uses less digits than its factorization.

641122361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58283862.

The product of its digits is 1728, while the sum is 26.

The square root of 641122361 is about 25320.3941714974. The cubic root of 641122361 is about 862.2773429594.

The spelling of 641122361 in words is "six hundred forty-one million, one hundred twenty-two thousand, three hundred sixty-one".