641081367 has 12 divisors (see below), whose sum is σ = 947542024. Its totient is φ = 417448080.

The previous prime is 641081341. The next prime is 641081447. The reversal of 641081367 is 763180146.

641081367 is a `hidden beast` number, since 641 + 0 + 8 + 1 + 3 + 6 + 7 = 666.

It is not a de Polignac number, because 641081367 - 2¹¹ = 641079319 is a prime.

It is a super-2 number, since 2×641081367² = 821970638229177378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641081867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 827884 + ... + 828657.

Almost surely, 2^641081367 is an apocalyptic number.

641081367 is a deficient number, since it is larger than the sum of its proper divisors (306460657).

641081367 is a wasteful number, since it uses less digits than its factorization.

641081367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656590 (or 1656587 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 641081367 is about 25319.5846529914. The cubic root of 641081367 is about 862.2589642780.

The spelling of 641081367 in words is "six hundred forty-one million, eighty-one thousand, three hundred sixty-seven".