3256020645 has 64 divisors (see below), whose sum is σ = 5591531520. Its totient is φ = 1614083328.

The previous prime is 3256020643. The next prime is 3256020661. The reversal of 3256020645 is 5460206523.

It is not a de Polignac number, because 3256020645 - 2¹ = 3256020643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3256020643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2545116 + ... + 2546394.

It is an arithmetic number, because the mean of its divisors is an integer number (87367680).

Almost surely, 2^3256020645 is an apocalyptic number.

It is an amenable number.

3256020645 is a deficient number, since it is larger than the sum of its proper divisors (2335510875).

3256020645 is a wasteful number, since it uses less digits than its factorization.

3256020645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 3256020645 is about 57061.5513721805. The cubic root of 3256020645 is about 1482.1621436709.

The spelling of 3256020645 in words is "three billion, two hundred fifty-six million, twenty thousand, six hundred forty-five".