3256778745 has 80 divisors (see below), whose sum is σ = 6384502080. Its totient is φ = 1575158400.

The previous prime is 3256778743. The next prime is 3256778773. The reversal of 3256778745 is 5478776523.

It is a happy number.

3256778745 is a `hidden beast` number, since 3 + 2 + 567 + 7 + 8 + 74 + 5 = 666.

It is not a de Polignac number, because 3256778745 - 2¹ = 3256778743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3256778691 and 3256778700.

It is not an unprimeable number, because it can be changed into a prime (3256778743) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2757055 + ... + 2758235.

It is an arithmetic number, because the mean of its divisors is an integer number (79806276).

Almost surely, 2^3256778745 is an apocalyptic number.

It is an amenable number.

3256778745 is a deficient number, since it is larger than the sum of its proper divisors (3127723335).

3256778745 is a wasteful number, since it uses less digits than its factorization.

3256778745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828 (or 1819 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The square root of 3256778745 is about 57068.1938123155. The cubic root of 3256778745 is about 1482.2771654568.

It can be divided in two parts, 3256778 and 745, that added together give a palindrome (3257523).

The spelling of 3256778745 in words is "three billion, two hundred fifty-six million, seven hundred seventy-eight thousand, seven hundred forty-five".