643160 has 32 divisors (see below), whose sum is σ = 1654560. Its totient is φ = 220416.

The previous prime is 643129. The next prime is 643183. The reversal of 643160 is 61346.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 15.

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, 869 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (51705).

2⁶⁴³¹⁶⁰ is an apocalyptic number.

It is an amenable number.

643160 is an abundant number, since it is smaller than the sum of its proper divisors (1011400).

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

643160 is a wasteful number, since it uses less digits than its factorization.

643160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315 (or 2311 counting only the distinct ones).

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

The square root of 643160 is about 801.9725681094. The cubic root of 643160 is about 86.3189884221.

The spelling of 643160 in words is "six hundred forty-three thousand, one hundred sixty".