641036 has 24 divisors (see below), whose sum is σ = 1297296. Its totient is φ = 273920.

The previous prime is 640993. The next prime is 641051. The reversal of 641036 is 630146.

641036 = T₇₄ + T₇₅ + ... + T₁₆₁.

It is a junction number, because it is equal to n+sod(n) for n = 640999 and 641017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2⁶⁴¹⁰³⁶ is an apocalyptic number.

It is an amenable number.

641036 is an abundant number, since it is smaller than the sum of its proper divisors (656260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641036 is a wasteful number, since it uses less digits than its factorization.

641036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 641036 is about 800.6472381767. The cubic root of 641036 is about 86.2238624153.

It can be divided in two parts, 6410 and 36, that added together give a palindrome (6446).

The spelling of 641036 in words is "six hundred forty-one thousand, thirty-six".