639067 has 16 divisors (see below), whose sum is σ = 776160. Its totient is φ = 518400.

The previous prime is 639053. The next prime is 639083. The reversal of 639067 is 760936.

It is a cyclic number.

It is not a de Polignac number, because 639067 - 2¹⁵ = 606299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (639007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5809 + ... + 5917.

It is an arithmetic number, because the mean of its divisors is an integer number (48510).

2⁶³⁹⁰⁶⁷ is an apocalyptic number.

639067 is a deficient number, since it is larger than the sum of its proper divisors (137093).

639067 is a wasteful number, since it uses less digits than its factorization.

639067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 639067 is about 799.4166623232. The cubic root of 639067 is about 86.1354904110.

The spelling of 639067 in words is "six hundred thirty-nine thousand, sixty-seven".