641367897 has 8 divisors (see below), whose sum is σ = 882743040. Its totient is φ = 413785680.

The previous prime is 641367887. The next prime is 641367901. The reversal of 641367897 is 798763146.

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

It is not a de Polignac number, because 641367897 - 2⁸ = 641367641 is a prime.

It is a super-2 number, since 2×641367897² = 822705558604405218, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (641367887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3448122 + ... + 3448307.

It is an arithmetic number, because the mean of its divisors is an integer number (110342880).

Almost surely, 2^641367897 is an apocalyptic number.

It is an amenable number.

641367897 is a deficient number, since it is larger than the sum of its proper divisors (241375143).

641367897 is a wasteful number, since it uses less digits than its factorization.

641367897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6896463.

The product of its digits is 1524096, while the sum is 51.

The square root of 641367897 is about 25325.2422890680. The cubic root of 641367897 is about 862.3874067685.

The spelling of 641367897 in words is "six hundred forty-one million, three hundred sixty-seven thousand, eight hundred ninety-seven".