641472 has 56 divisors (see below), whose sum is σ = 1834896. Its totient is φ = 196608.

The previous prime is 641471. The next prime is 641479. The reversal of 641472 is 274146.

It is a super-2 number, since 2×641472² = 822972653568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2368 + ... + 2624.

It is an arithmetic number, because the mean of its divisors is an integer number (32766).

2⁶⁴¹⁴⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917448).

641472 is an abundant number, since it is smaller than the sum of its proper divisors (1193424).

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

641472 is a wasteful number, since it uses less digits than its factorization.

641472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 275 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 641472 is about 800.9194716075. The cubic root of 641472 is about 86.2434063432.

It can be divided in two parts, 6 and 41472, that multiplied together give a 5-th power (248832 = 12⁵).

The spelling of 641472 in words is "six hundred forty-one thousand, four hundred seventy-two".