641335445 has 8 divisors (see below), whose sum is σ = 785977344. Its totient is φ = 502151824.

The previous prime is 641335433. The next prime is 641335447. The reversal of 641335445 is 544533146.

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

It is a cyclic number.

It is not a de Polignac number, because 641335445 - 2¹² = 641331349 is a prime.

It is a super-2 number, since 2×641335445² = 822622306026696050, 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 (641335447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364309 + ... + 1364778.

It is an arithmetic number, because the mean of its divisors is an integer number (98247168).

Almost surely, 2^641335445 is an apocalyptic number.

It is an amenable number.

641335445 is a deficient number, since it is larger than the sum of its proper divisors (144641899).

641335445 is a wasteful number, since it uses less digits than its factorization.

641335445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729139.

The product of its digits is 86400, while the sum is 35.

The square root of 641335445 is about 25324.6015763328. The cubic root of 641335445 is about 862.3728614671.

The spelling of 641335445 in words is "six hundred forty-one million, three hundred thirty-five thousand, four hundred forty-five".