641533022 has 16 divisors (see below), whose sum is σ = 1039273200. Its totient is φ = 295249152.

The previous prime is 641533001. The next prime is 641533037. The reversal of 641533022 is 220335146.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 641532982 and 641533000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25772 + ... + 44127.

It is an arithmetic number, because the mean of its divisors is an integer number (64954575).

Almost surely, 2^641533022 is an apocalyptic number.

641533022 is a deficient number, since it is larger than the sum of its proper divisors (397740178).

641533022 is a wasteful number, since it uses less digits than its factorization.

641533022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70267.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 641533022 is about 25328.5021665317. The cubic root of 641533022 is about 862.4614097976.

Adding to 641533022 its reverse (220335146), we get a palindrome (861868168).

The spelling of 641533022 in words is "six hundred forty-one million, five hundred thirty-three thousand, twenty-two".