103206639 has 8 divisors (see below), whose sum is σ = 137985280. Its totient is φ = 68616216.

The previous prime is 103206637. The next prime is 103206661. The reversal of 103206639 is 936602301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103206639 - 2¹ = 103206637 is a prime.

It is a super-2 number, since 2×103206639² = 21303220667352642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103206637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45769 + ... + 47970.

It is an arithmetic number, because the mean of its divisors is an integer number (17248160).

Almost surely, 2^103206639 is an apocalyptic number.

103206639 is a deficient number, since it is larger than the sum of its proper divisors (34778641).

103206639 is an equidigital number, since it uses as much as digits as its factorization.

103206639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94109.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 103206639 is about 10159.0668370673. The cubic root of 103206639 is about 469.0680779453.

The spelling of 103206639 in words is "one hundred three million, two hundred six thousand, six hundred thirty-nine".