639214 has 4 divisors (see below), whose sum is σ = 958824. Its totient is φ = 319606.

The previous prime is 639211. The next prime is 639253. The reversal of 639214 is 412936.

639214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159802 + ... + 159805.

It is an arithmetic number, because the mean of its divisors is an integer number (239706).

2⁶³⁹²¹⁴ is an apocalyptic number.

639214 is a deficient number, since it is larger than the sum of its proper divisors (319610).

639214 is a wasteful number, since it uses less digits than its factorization.

639214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319609.

The product of its digits is 1296, while the sum is 25.

The square root of 639214 is about 799.5085990782. The cubic root of 639214 is about 86.1420942811.

The spelling of 639214 in words is "six hundred thirty-nine thousand, two hundred fourteen".