639060 has 24 divisors (see below), whose sum is σ = 1789536. Its totient is φ = 170400.

The previous prime is 639053. The next prime is 639083. The reversal of 639060 is 60936.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 639060.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5266 + ... + 5385.

It is an arithmetic number, because the mean of its divisors is an integer number (74564).

2⁶³⁹⁰⁶⁰ is an apocalyptic number.

639060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

639060 is an abundant number, since it is smaller than the sum of its proper divisors (1150476).

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

639060 is a wasteful number, since it uses less digits than its factorization.

639060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10663 (or 10661 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 639060 is about 799.4122841188. The cubic root of 639060 is about 86.1351759157.

Adding to 639060 its reverse (60936), we get a palindrome (699996).

The spelling of 639060 in words is "six hundred thirty-nine thousand, sixty".