641297206 has 8 divisors (see below), whose sum is σ = 1049395464. Its totient is φ = 291498720.

The previous prime is 641297203. The next prime is 641297221. The reversal of 641297206 is 602792146.

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

It is a super-2 number, since 2×641297206² = 822524212846812872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641297203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14574915 + ... + 14574958.

It is an arithmetic number, because the mean of its divisors is an integer number (131174433).

Almost surely, 2^641297206 is an apocalyptic number.

641297206 is a deficient number, since it is larger than the sum of its proper divisors (408098258).

641297206 is a wasteful number, since it uses less digits than its factorization.

641297206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29149886.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 641297206 is about 25323.8465877520. The cubic root of 641297206 is about 862.3557217463.

The spelling of 641297206 in words is "six hundred forty-one million, two hundred ninety-seven thousand, two hundred six".