639034 has 16 divisors (see below), whose sum is σ = 1080576. Its totient is φ = 280800.

The previous prime is 639011. The next prime is 639043. The reversal of 639034 is 430936.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214 + ... + 1150.

It is an arithmetic number, because the mean of its divisors is an integer number (67536).

2⁶³⁹⁰³⁴ is an apocalyptic number.

639034 is a deficient number, since it is larger than the sum of its proper divisors (441542).

639034 is a wasteful number, since it uses less digits than its factorization.

639034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 639034 is about 799.3960220066. The cubic root of 639034 is about 86.1340077703.

The spelling of 639034 in words is "six hundred thirty-nine thousand, thirty-four".