641167207 has 4 divisors (see below), whose sum is σ = 641801160. Its totient is φ = 640533256.

The previous prime is 641167193. The next prime is 641167211. The reversal of 641167207 is 702761146.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702761146 = 2 ⋅351380573.

It is a cyclic number.

It is not a de Polignac number, because 641167207 - 2¹¹ = 641165159 is a prime.

It is a super-2 number, since 2×641167207² = 822190774664361698, 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 (641167277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315457 + ... + 317482.

It is an arithmetic number, because the mean of its divisors is an integer number (160450290).

Almost surely, 2^641167207 is an apocalyptic number.

641167207 is a deficient number, since it is larger than the sum of its proper divisors (633953).

641167207 is a wasteful number, since it uses less digits than its factorization.

641167207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633952.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 641167207 is about 25321.2797267437. The cubic root of 641167207 is about 862.2974476958.

The spelling of 641167207 in words is "six hundred forty-one million, one hundred sixty-seven thousand, two hundred seven".