639016011 has 12 divisors (see below), whose sum is σ = 947970192. Its totient is φ = 414496656.

The previous prime is 639016003. The next prime is 639016013. The reversal of 639016011 is 110610936.

639016011 is a `hidden beast` number, since 639 + 0 + 16 + 0 + 11 = 666.

It is not a de Polignac number, because 639016011 - 2³ = 639016003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (639016013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 959151 + ... + 959816.

It is an arithmetic number, because the mean of its divisors is an integer number (78997516).

Almost surely, 2^639016011 is an apocalyptic number.

639016011 is a deficient number, since it is larger than the sum of its proper divisors (308954181).

639016011 is a wasteful number, since it uses less digits than its factorization.

639016011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919010 (or 1919007 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 639016011 is about 25278.7660102308. The cubic root of 639016011 is about 861.3319952998.

Adding to 639016011 its reverse (110610936), we get a palindrome (749626947).

The spelling of 639016011 in words is "six hundred thirty-nine million, sixteen thousand, eleven".