641342289 has 16 divisors (see below), whose sum is σ = 1034771328. Its totient is φ = 344923392.

The previous prime is 641342269. The next prime is 641342297. The reversal of 641342289 is 982243146.

It is not a de Polignac number, because 641342289 - 2¹⁷ = 641211217 is a prime.

It is a super-2 number, since 2×641342289² = 822639863319519042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641342269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 897882 + ... + 898595.

It is an arithmetic number, because the mean of its divisors is an integer number (64673208).

Almost surely, 2^641342289 is an apocalyptic number.

It is an amenable number.

641342289 is a deficient number, since it is larger than the sum of its proper divisors (393429039).

641342289 is a wasteful number, since it uses less digits than its factorization.

641342289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796504.

The product of its digits is 82944, while the sum is 39.

The square root of 641342289 is about 25324.7367014941. The cubic root of 641342289 is about 862.3759290551.

The spelling of 641342289 in words is "six hundred forty-one million, three hundred forty-two thousand, two hundred eighty-nine".