641276067 has 8 divisors (see below), whose sum is σ = 860281024. Its totient is φ = 424894248.

The previous prime is 641276063. The next prime is 641276089. The reversal of 641276067 is 760672146.

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

It is not a de Polignac number, because 641276067 - 2² = 641276063 is a prime.

It is a super-2 number, since 2×641276067² = 822469988213976978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641276063) 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 7 ways as a sum of consecutive naturals, for example, 655213 + ... + 656190.

It is an arithmetic number, because the mean of its divisors is an integer number (107535128).

Almost surely, 2^641276067 is an apocalyptic number.

641276067 is a deficient number, since it is larger than the sum of its proper divisors (219004957).

641276067 is a wasteful number, since it uses less digits than its factorization.

641276067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311569.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 641276067 is about 25323.4292109106. The cubic root of 641276067 is about 862.3462464008.

The spelling of 641276067 in words is "six hundred forty-one million, two hundred seventy-six thousand, sixty-seven".