639196675 has 24 divisors (see below), whose sum is σ = 858757536. Its totient is φ = 469155840.

The previous prime is 639196673. The next prime is 639196697. The reversal of 639196675 is 576691936.

It is not a de Polignac number, because 639196675 - 2¹ = 639196673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (639196673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48387 + ... + 60163.

It is an arithmetic number, because the mean of its divisors is an integer number (35781564).

Almost surely, 2^639196675 is an apocalyptic number.

639196675 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

639196675 is a deficient number, since it is larger than the sum of its proper divisors (219560861).

639196675 is a wasteful number, since it uses less digits than its factorization.

639196675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11967 (or 11962 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 52.

The square root of 639196675 is about 25282.3391916175. The cubic root of 639196675 is about 861.4131602045.

The spelling of 639196675 in words is "six hundred thirty-nine million, one hundred ninety-six thousand, six hundred seventy-five".