643054 has 8 divisors (see below), whose sum is σ = 985248. Its totient is φ = 314640.

The previous prime is 643051. The next prime is 643061. The reversal of 643054 is 450346.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643051) 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, 3327 + ... + 3514.

It is an arithmetic number, because the mean of its divisors is an integer number (123156).

2⁶⁴³⁰⁵⁴ is an apocalyptic number.

643054 is a deficient number, since it is larger than the sum of its proper divisors (342194).

643054 is a wasteful number, since it uses less digits than its factorization.

643054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 643054 is about 801.9064783377. The cubic root of 643054 is about 86.3142460483.

The spelling of 643054 in words is "six hundred forty-three thousand, fifty-four".