641767146 has 32 divisors (see below), whose sum is σ = 1360762368. Its totient is φ = 201424320.

The previous prime is 641767141. The next prime is 641767157.

641767146 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 641767098 and 641767107.

It is not an unprimeable number, because it can be changed into a prime (641767141) 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 15 ways as a sum of consecutive naturals, for example, 39745 + ... + 53508.

It is an arithmetic number, because the mean of its divisors is an integer number (42523824).

Almost surely, 2^641767146 is an apocalyptic number.

641767146 is an abundant number, since it is smaller than the sum of its proper divisors (718995222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641767146 is a wasteful number, since it uses less digits than its factorization.

641767146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93326.

The product of its digits is 169344, while the sum is 42.

The square root of 641767146 is about 25333.1234947450. The cubic root of 641767146 is about 862.5663139099.

The spelling of 641767146 in words is "six hundred forty-one million, seven hundred sixty-seven thousand, one hundred forty-six".