641572 has 12 divisors (see below), whose sum is σ = 1134000. Its totient is φ = 317576.

The previous prime is 641551. The next prime is 641579. The reversal of 641572 is 275146.

It is a super-2 number, since 2×641572² = 823229262368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (94500).

2⁶⁴¹⁵⁷² is an apocalyptic number.

It is an amenable number.

641572 is a deficient number, since it is larger than the sum of its proper divisors (492428).

641572 is a wasteful number, since it uses less digits than its factorization.

641572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610 (or 1608 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 641572 is about 800.9818974234. The cubic root of 641572 is about 86.2478876469.

The spelling of 641572 in words is "six hundred forty-one thousand, five hundred seventy-two".