325777644 has 72 divisors (see below), whose sum is σ = 847016352. Its totient is φ = 105530880.

The previous prime is 325777609. The next prime is 325777649. The reversal of 325777644 is 446777523.

325777644 is a `hidden beast` number, since 3 + 2 + 577 + 76 + 4 + 4 = 666.

It is a super-2 number, since 2×325777644² = 212262146660381472, 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 325777644.

It is not an unprimeable number, because it can be changed into a prime (325777649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214849 + ... + 216359.

It is an arithmetic number, because the mean of its divisors is an integer number (11764116).

Almost surely, 2^325777644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325777644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423508176).

325777644 is an abundant number, since it is smaller than the sum of its proper divisors (521238708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

325777644 is a wasteful number, since it uses less digits than its factorization.

325777644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1682 counting only the distinct ones).

The product of its digits is 987840, while the sum is 45.

The square root of 325777644 is about 18049.3114550112. The cubic root of 325777644 is about 688.0823629312.

The spelling of 325777644 in words is "three hundred twenty-five million, seven hundred seventy-seven thousand, six hundred forty-four".