641435073 has 16 divisors (see below), whose sum is σ = 860569920. Its totient is φ = 424970816.

The previous prime is 641435033. The next prime is 641435077. The reversal of 641435073 is 370534146.

It is a cyclic number.

It is not a de Polignac number, because 641435073 - 2⁶ = 641435009 is a prime.

It is a super-2 number, since 2×641435073² = 822877905749030658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641435077) 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, 448786 + ... + 450212.

It is an arithmetic number, because the mean of its divisors is an integer number (53785620).

Almost surely, 2^641435073 is an apocalyptic number.

It is an amenable number.

641435073 is a deficient number, since it is larger than the sum of its proper divisors (219134847).

641435073 is a wasteful number, since it uses less digits than its factorization.

641435073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 641435073 is about 25326.5685200345. The cubic root of 641435073 is about 862.4175141448.

The spelling of 641435073 in words is "six hundred forty-one million, four hundred thirty-five thousand, seventy-three".