640058 has 8 divisors (see below), whose sum is σ = 972480. Its totient is φ = 315900.

The previous prime is 640049. The next prime is 640061. The reversal of 640058 is 850046.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868 + ... + 2183.

It is an arithmetic number, because the mean of its divisors is an integer number (121560).

2⁶⁴⁰⁰⁵⁸ is an apocalyptic number.

640058 is a deficient number, since it is larger than the sum of its proper divisors (332422).

640058 is a wasteful number, since it uses less digits than its factorization.

640058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4132.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 640058 is about 800.0362491787. The cubic root of 640058 is about 86.1799907979.

The spelling of 640058 in words is "six hundred forty thousand, fifty-eight".