641166434 has 8 divisors (see below), whose sum is σ = 962050908. Its totient is φ = 320482800.

The previous prime is 641166391. The next prime is 641166437. The reversal of 641166434 is 434661146.

It is a happy number.

641166434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 639837025 + 1329409 = 25295^2 + 1153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×641166434² = 822188792176552712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641166394 and 641166403.

It is not an unprimeable number, because it can be changed into a prime (641166437) 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, 41957 + ... + 55160.

Almost surely, 2^641166434 is an apocalyptic number.

641166434 is a deficient number, since it is larger than the sum of its proper divisors (320884474).

641166434 is a wasteful number, since it uses less digits than its factorization.

641166434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100420.

The product of its digits is 41472, while the sum is 35.

The square root of 641166434 is about 25321.2644628976. The cubic root of 641166434 is about 862.2971011631.

The spelling of 641166434 in words is "six hundred forty-one million, one hundred sixty-six thousand, four hundred thirty-four".