3205985967 has 16 divisors (see below), whose sum is σ = 4827473760. Its totient is φ = 2102284800.

The previous prime is 3205985963. The next prime is 3205985969. The reversal of 3205985967 is 7695895023.

It is not a de Polignac number, because 3205985967 - 2² = 3205985963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3205985963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 971634 + ... + 974927.

It is an arithmetic number, because the mean of its divisors is an integer number (301717110).

Almost surely, 2^3205985967 is an apocalyptic number.

3205985967 is a deficient number, since it is larger than the sum of its proper divisors (1621487793).

3205985967 is a wasteful number, since it uses less digits than its factorization.

3205985967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946631 (or 1946625 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The square root of 3205985967 is about 56621.4267481843. The cubic root of 3205985967 is about 1474.5308809011.

The spelling of 3205985967 in words is "three billion, two hundred five million, nine hundred eighty-five thousand, nine hundred sixty-seven".