643153 has 8 divisors (see below), whose sum is σ = 741440. Its totient is φ = 546480.

The previous prime is 643129. The next prime is 643183. The reversal of 643153 is 351346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 643153 - 2⁵ = 643121 is a prime.

643153 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (643183) 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, 643 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (92680).

2⁶⁴³¹⁵³ is an apocalyptic number.

It is an amenable number.

643153 is a deficient number, since it is larger than the sum of its proper divisors (98287).

643153 is a wasteful number, since it uses less digits than its factorization.

643153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807.

The product of its digits is 1080, while the sum is 22.

The square root of 643153 is about 801.9682038585. The cubic root of 643153 is about 86.3186752625.

Adding to 643153 its reverse (351346), we get a palindrome (994499).

The spelling of 643153 in words is "six hundred forty-three thousand, one hundred fifty-three".