641276 has 6 divisors (see below), whose sum is σ = 1122240. Its totient is φ = 320636.

The previous prime is 641261. The next prime is 641279. The reversal of 641276 is 672146.

It is a super-2 number, since 2×641276² = 822469816352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80156 + ... + 80163.

It is an arithmetic number, because the mean of its divisors is an integer number (187040).

2⁶⁴¹²⁷⁶ is an apocalyptic number.

It is an amenable number.

641276 is a deficient number, since it is larger than the sum of its proper divisors (480964).

641276 is a wasteful number, since it uses less digits than its factorization.

641276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160323 (or 160321 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 641276 is about 800.7971028919. The cubic root of 641276 is about 86.2346216368.

The spelling of 641276 in words is "six hundred forty-one thousand, two hundred seventy-six".