3205872069 has 8 divisors (see below), whose sum is σ = 4274779680. Its totient is φ = 2137106256.

The previous prime is 3205872029. The next prime is 3205872073. The reversal of 3205872069 is 9602785023.

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

It is not a de Polignac number, because 3205872069 - 2⁷ = 3205871941 is a prime.

It is a super-2 number, since 2×3205872069² = 20555231445588681522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3205872069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3205872029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40639 + ... + 89795.

It is an arithmetic number, because the mean of its divisors is an integer number (534347460).

Almost surely, 2^3205872069 is an apocalyptic number.

It is an amenable number.

3205872069 is a deficient number, since it is larger than the sum of its proper divisors (1068907611).

3205872069 is a wasteful number, since it uses less digits than its factorization.

3205872069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70899.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 3205872069 is about 56620.4209539279. The cubic root of 3205872069 is about 1474.5134189712.

The spelling of 3205872069 in words is "three billion, two hundred five million, eight hundred seventy-two thousand, sixty-nine".