639700606711 has 4 divisors (see below), whose sum is σ = 667513676592. Its totient is φ = 611887536832.

The previous prime is 639700606697. The next prime is 639700606717. The reversal of 639700606711 is 117606007936.

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

It is a cyclic number.

It is not a de Polignac number, because 639700606711 - 2⁵ = 639700606679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639700606717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13906534906 + ... + 13906534951.

It is an arithmetic number, because the mean of its divisors is an integer number (166878419148).

Almost surely, 2^639700606711 is an apocalyptic number.

639700606711 is a deficient number, since it is larger than the sum of its proper divisors (27813069881).

639700606711 is a wasteful number, since it uses less digits than its factorization.

639700606711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27813069880.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 639700606711 in words is "six hundred thirty-nine billion, seven hundred million, six hundred six thousand, seven hundred eleven".