3256977646 has 16 divisors (see below), whose sum is σ = 5442696000. Its totient is φ = 1451384928.

The previous prime is 3256977631. The next prime is 3256977653. The reversal of 3256977646 is 6467796523.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2159046 + ... + 2160553.

It is an arithmetic number, because the mean of its divisors is an integer number (340168500).

Almost surely, 2^3256977646 is an apocalyptic number.

3256977646 is a deficient number, since it is larger than the sum of its proper divisors (2185718354).

3256977646 is a wasteful number, since it uses less digits than its factorization.

3256977646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319643.

The product of its digits is 11430720, while the sum is 55.

The square root of 3256977646 is about 57069.9364464339. The cubic root of 3256977646 is about 1482.3073405092.

It can be divided in two parts, 32569 and 77646, that added together give a triangular number (110215 = T₄₆₉).

The spelling of 3256977646 in words is "three billion, two hundred fifty-six million, nine hundred seventy-seven thousand, six hundred forty-six".