641562 has 16 divisors (see below), whose sum is σ = 1339200. Its totient is φ = 204512.

The previous prime is 641551. The next prime is 641579. The reversal of 641562 is 265146.

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, 2187 + ... + 2462.

It is an arithmetic number, because the mean of its divisors is an integer number (83700).

2⁶⁴¹⁵⁶² is an apocalyptic number.

641562 is an abundant number, since it is smaller than the sum of its proper divisors (697638).

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

641562 is a wasteful number, since it uses less digits than its factorization.

641562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677.

The product of its digits is 1440, while the sum is 24.

The square root of 641562 is about 800.9756550608. The cubic root of 641562 is about 86.2474395375.

The spelling of 641562 in words is "six hundred forty-one thousand, five hundred sixty-two".