355566644 has 6 divisors (see below), whose sum is σ = 622241634. Its totient is φ = 177783320.

The previous prime is 355566643. The next prime is 355566647. The reversal of 355566644 is 446665553.

It can be written as a sum of positive squares in only one way, i.e., 339001744 + 16564900 = 18412^2 + 4070^2 .

It is a junction number, because it is equal to n+sod(n) for n = 355566595 and 355566604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355566641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44445827 + ... + 44445834.

It is an arithmetic number, because the mean of its divisors is an integer number (103706939).

Almost surely, 2^355566644 is an apocalyptic number.

It is an amenable number.

355566644 is a deficient number, since it is larger than the sum of its proper divisors (266674990).

355566644 is a wasteful number, since it uses less digits than its factorization.

355566644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88891665 (or 88891663 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 44.

The square root of 355566644 is about 18856.4748561336. The cubic root of 355566644 is about 708.4464105643.

The spelling of 355566644 in words is "three hundred fifty-five million, five hundred sixty-six thousand, six hundred forty-four".